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Data Interpretation questions

Reading tables: averages and percentage changes.

1. A company's laptop sales were: 2021: 470 units 2022: 120 units 2023: 350 units 2024: 480 units 2025: 370 units What was the percentage change in sales from 2022 to 2023?

  1. 65.71% increase
  2. 191.67% increase
  3. 196.67% increase
  4. 191.67% decrease
Answer

B. 191.67% increase Change = 230 on 120 = 191.67%.

2. A company's laptop sales were: 2021: 300 units 2022: 570 units 2023: 360 units 2024: 180 units 2025: 120 units In which year were sales the highest?

  1. 2023
  2. 2022
  3. 2024
  4. 2021
Answer

B. 2022 The largest value is 570 in 2022.

3. A company's laptop sales were: 2021: 200 units 2022: 150 units 2023: 180 units 2024: 270 units 2025: 500 units What is the average yearly sale?

  1. 261 units
  2. 195 units
  3. 262 units
  4. 260 units
Answer

D. 260 units Total = 1300. Average = 1300/5 = 260.

4. A company's laptop sales were: 2021: 560 units 2022: 500 units 2023: 180 units 2024: 120 units 2025: 240 units What was the percentage change in sales from 2022 to 2023?

  1. 69% decrease
  2. 64% increase
  3. 177.78% decrease
  4. 64% decrease
Answer

D. 64% decrease Change = -320 on 500 = -64%.

5. A company's laptop sales were: 2021: 260 units 2022: 340 units 2023: 120 units 2024: 340 units 2025: 270 units In which year were sales the highest?

  1. 2023
  2. 2021
  3. 2024
  4. 2022
Answer

D. 2022 The largest value is 340 in 2022.

6. A company's laptop sales were: 2021: 380 units 2022: 520 units 2023: 270 units 2024: 450 units 2025: 360 units What is the average yearly sale?

  1. 297 units
  2. 396 units
  3. 394 units
  4. 398 units
Answer

B. 396 units Total = 1980. Average = 1980/5 = 396.

7. A company's laptop sales were: 2021: 420 units 2022: 460 units 2023: 170 units 2024: 410 units 2025: 230 units What was the percentage change in sales from 2021 to 2022?

  1. 14.52% increase
  2. 9.52% decrease
  3. 8.7% increase
  4. 9.52% increase
Answer

D. 9.52% increase Change = 40 on 420 = 9.52%.

8. A company's laptop sales were: 2021: 180 units 2022: 160 units 2023: 140 units 2024: 260 units 2025: 210 units In which year were sales the highest?

  1. 2021
  2. 2023
  3. 2022
  4. 2024
Answer

D. 2024 The largest value is 260 in 2024.

9. A company's laptop sales were: 2021: 390 units 2022: 340 units 2023: 570 units 2024: 510 units 2025: 340 units What is the average yearly sale?

  1. 428 units
  2. 430 units
  3. 323 units
  4. 387 units
Answer

B. 430 units Total = 2150. Average = 2150/5 = 430.

10. A company's laptop sales were: 2021: 460 units 2022: 360 units 2023: 190 units 2024: 250 units 2025: 480 units What was the percentage change in sales from 2024 to 2025?

  1. 92% increase
  2. 97% increase
  3. 92% decrease
  4. 47.92% increase
Answer

A. 92% increase Change = 230 on 250 = 92%.

11. A company's laptop sales were: 2021: 520 units 2022: 560 units 2023: 570 units 2024: 240 units 2025: 520 units In which year were sales the highest?

  1. 2023
  2. 2021
  3. 2022
  4. 2024
Answer

A. 2023 The largest value is 570 in 2023.

12. A company's laptop sales were: 2021: 190 units 2022: 340 units 2023: 540 units 2024: 390 units 2025: 600 units What is the average yearly sale?

  1. 412 units
  2. 515 units
  3. 371 units
  4. 309 units
Answer

A. 412 units Total = 2060. Average = 2060/5 = 412.

13. A company's laptop sales were: 2021: 500 units 2022: 350 units 2023: 140 units 2024: 470 units 2025: 560 units What was the percentage change in sales from 2021 to 2022?

  1. 42.86% decrease
  2. 35% decrease
  3. 30% decrease
  4. 30% increase
Answer

C. 30% decrease Change = -150 on 500 = -30%.

14. A company's laptop sales were: 2021: 300 units 2022: 240 units 2023: 500 units 2024: 260 units 2025: 600 units In which year were sales the highest?

  1. 2025
  2. 2022
  3. 2023
  4. 2021
Answer

A. 2025 The largest value is 600 in 2025.

15. A company's laptop sales were: 2021: 380 units 2022: 230 units 2023: 520 units 2024: 420 units 2025: 120 units What is the average yearly sale?

  1. 418 units
  2. 334 units
  3. 267 units
  4. 336 units
Answer

B. 334 units Total = 1670. Average = 1670/5 = 334.

16. A company's laptop sales were: 2021: 130 units 2022: 370 units 2023: 460 units 2024: 140 units 2025: 380 units What was the percentage change in sales from 2022 to 2023?

  1. 24.32% decrease
  2. 29.32% increase
  3. 19.57% increase
  4. 24.32% increase
Answer

D. 24.32% increase Change = 90 on 370 = 24.32%.

17. A company's laptop sales were: 2021: 210 units 2022: 360 units 2023: 530 units 2024: 510 units 2025: 530 units In which year were sales the highest?

  1. 2024
  2. 2023
  3. 2022
  4. 2021
Answer

B. 2023 The largest value is 530 in 2023.

18. A company's laptop sales were: 2021: 220 units 2022: 600 units 2023: 420 units 2024: 400 units 2025: 480 units What is the average yearly sale?

  1. 424 units
  2. 426 units
  3. 318 units
  4. 466 units
Answer

A. 424 units Total = 2120. Average = 2120/5 = 424.

19. A company's laptop sales were: 2021: 180 units 2022: 290 units 2023: 240 units 2024: 160 units 2025: 360 units What was the percentage change in sales from 2022 to 2023?

  1. 17.24% decrease
  2. 17.24% increase
  3. 20.83% decrease
  4. 22.24% decrease
Answer

A. 17.24% decrease Change = -50 on 290 = -17.24%.

20. A company's laptop sales were: 2021: 250 units 2022: 280 units 2023: 500 units 2024: 570 units 2025: 390 units In which year were sales the highest?

  1. 2024
  2. 2021
  3. 2023
  4. 2022
Answer

A. 2024 The largest value is 570 in 2024.

21. A company's laptop sales were: 2021: 200 units 2022: 400 units 2023: 310 units 2024: 550 units 2025: 580 units What is the average yearly sale?

  1. 408 units
  2. 406 units
  3. 410 units
  4. 407 units
Answer

A. 408 units Total = 2040. Average = 2040/5 = 408.

22. A company's laptop sales were: 2021: 600 units 2022: 600 units 2023: 320 units 2024: 480 units 2025: 310 units What was the percentage change in sales from 2022 to 2023?

  1. 46.67% increase
  2. 87.5% decrease
  3. 51.67% decrease
  4. 46.67% decrease
Answer

D. 46.67% decrease Change = -280 on 600 = -46.67%.

23. A company's laptop sales were: 2021: 590 units 2022: 260 units 2023: 160 units 2024: 340 units 2025: 570 units In which year were sales the highest?

  1. 2024
  2. 2022
  3. 2023
  4. 2021
Answer

D. 2021 The largest value is 590 in 2021.

24. A company's laptop sales were: 2021: 260 units 2022: 570 units 2023: 580 units 2024: 520 units 2025: 150 units What is the average yearly sale?

  1. 312 units
  2. 416 units
  3. 333 units
  4. 374 units
Answer

B. 416 units Total = 2080. Average = 2080/5 = 416.

25. A company's laptop sales were: 2021: 370 units 2022: 450 units 2023: 150 units 2024: 230 units 2025: 470 units What was the percentage change in sales from 2022 to 2023?

  1. 71.67% decrease
  2. 66.67% increase
  3. 66.67% decrease
  4. 200% decrease
Answer

C. 66.67% decrease Change = -300 on 450 = -66.67%.

26. A company's laptop sales were: 2021: 260 units 2022: 580 units 2023: 470 units 2024: 240 units 2025: 370 units In which year were sales the highest?

  1. 2021
  2. 2024
  3. 2022
  4. 2023
Answer

C. 2022 The largest value is 580 in 2022.

27. A company's laptop sales were: 2021: 360 units 2022: 450 units 2023: 420 units 2024: 250 units 2025: 150 units What is the average yearly sale?

  1. 327 units
  2. 391 units
  3. 293 units
  4. 326 units
Answer

D. 326 units Total = 1630. Average = 1630/5 = 326.

28. A company's laptop sales were: 2021: 140 units 2022: 530 units 2023: 560 units 2024: 150 units 2025: 300 units What was the percentage change in sales from 2021 to 2022?

  1. 73.58% increase
  2. 278.57% increase
  3. 283.57% increase
  4. 278.57% decrease
Answer

B. 278.57% increase Change = 390 on 140 = 278.57%.

29. A company's laptop sales were: 2021: 460 units 2022: 480 units 2023: 270 units 2024: 150 units 2025: 420 units In which year were sales the highest?

  1. 2021
  2. 2024
  3. 2023
  4. 2022
Answer

D. 2022 The largest value is 480 in 2022.

30. A company's laptop sales were: 2021: 210 units 2022: 410 units 2023: 180 units 2024: 240 units 2025: 600 units What is the average yearly sale?

  1. 330 units
  2. 361 units
  3. 329 units
  4. 328 units
Answer

D. 328 units Total = 1640. Average = 1640/5 = 328.

31. A company's laptop sales were: 2021: 360 units 2022: 600 units 2023: 570 units 2024: 390 units 2025: 290 units What was the percentage change in sales from 2023 to 2024?

  1. 36.58% decrease
  2. 46.15% decrease
  3. 31.58% increase
  4. 31.58% decrease
Answer

D. 31.58% decrease Change = -180 on 570 = -31.58%.

32. A company's laptop sales were: 2021: 150 units 2022: 310 units 2023: 210 units 2024: 230 units 2025: 140 units In which year were sales the highest?

  1. 2023
  2. 2021
  3. 2022
  4. 2024
Answer

C. 2022 The largest value is 310 in 2022.

33. A company's laptop sales were: 2021: 220 units 2022: 300 units 2023: 250 units 2024: 240 units 2025: 380 units What is the average yearly sale?

  1. 276 units
  2. 334 units
  3. 250 units
  4. 278 units
Answer

D. 278 units Total = 1390. Average = 1390/5 = 278.

34. A company's laptop sales were: 2021: 520 units 2022: 140 units 2023: 530 units 2024: 170 units 2025: 170 units What was the percentage change in sales from 2023 to 2024?

  1. 211.76% decrease
  2. 67.92% increase
  3. 67.92% decrease
  4. 72.92% decrease
Answer

C. 67.92% decrease Change = -360 on 530 = -67.92%.

35. A company's laptop sales were: 2021: 530 units 2022: 190 units 2023: 140 units 2024: 140 units 2025: 410 units In which year were sales the highest?

  1. 2023
  2. 2021
  3. 2024
  4. 2022
Answer

B. 2021 The largest value is 530 in 2021.

36. A company's laptop sales were: 2021: 440 units 2022: 420 units 2023: 410 units 2024: 440 units 2025: 290 units What is the average yearly sale?

  1. 400 units
  2. 398 units
  3. 399 units
  4. 402 units
Answer

A. 400 units Total = 2000. Average = 2000/5 = 400.

37. A company's laptop sales were: 2021: 530 units 2022: 120 units 2023: 500 units 2024: 470 units 2025: 330 units What was the percentage change in sales from 2022 to 2023?

  1. 76% increase
  2. 321.67% increase
  3. 316.67% increase
  4. 316.67% decrease
Answer

C. 316.67% increase Change = 380 on 120 = 316.67%.

38. A company's laptop sales were: 2021: 370 units 2022: 310 units 2023: 340 units 2024: 580 units 2025: 380 units In which year were sales the highest?

  1. 2024
  2. 2022
  3. 2021
  4. 2023
Answer

A. 2024 The largest value is 580 in 2024.

39. A company's laptop sales were: 2021: 280 units 2022: 500 units 2023: 360 units 2024: 310 units 2025: 390 units What is the average yearly sale?

  1. 276 units
  2. 331 units
  3. 442 units
  4. 368 units
Answer

D. 368 units Total = 1840. Average = 1840/5 = 368.

40. A company's laptop sales were: 2021: 440 units 2022: 360 units 2023: 280 units 2024: 400 units 2025: 240 units What was the percentage change in sales from 2022 to 2023?

  1. 22.22% decrease
  2. 28.57% decrease
  3. 27.22% decrease
  4. 22.22% increase
Answer

A. 22.22% decrease Change = -80 on 360 = -22.22%.

41. A company's laptop sales were: 2021: 480 units 2022: 450 units 2023: 390 units 2024: 220 units 2025: 400 units In which year were sales the highest?

  1. 2021
  2. 2024
  3. 2023
  4. 2022
Answer

A. 2021 The largest value is 480 in 2021.

42. A company's laptop sales were: 2021: 290 units 2022: 310 units 2023: 590 units 2024: 570 units 2025: 220 units What is the average yearly sale?

  1. 475 units
  2. 394 units
  3. 396 units
  4. 317 units
Answer

C. 396 units Total = 1980. Average = 1980/5 = 396.

43. A company's laptop sales were: 2021: 180 units 2022: 140 units 2023: 120 units 2024: 500 units 2025: 490 units What was the percentage change in sales from 2022 to 2023?

  1. 14.29% increase
  2. 16.67% decrease
  3. 14.29% decrease
  4. 19.29% decrease
Answer

C. 14.29% decrease Change = -20 on 140 = -14.29%.

44. A company's laptop sales were: 2021: 320 units 2022: 350 units 2023: 590 units 2024: 330 units 2025: 360 units In which year were sales the highest?

  1. 2021
  2. 2023
  3. 2024
  4. 2022
Answer

B. 2023 The largest value is 590 in 2023.

45. A company's laptop sales were: 2021: 390 units 2022: 290 units 2023: 160 units 2024: 380 units 2025: 190 units What is the average yearly sale?

  1. 282 units
  2. 284 units
  3. 338 units
  4. 226 units
Answer

A. 282 units Total = 1410. Average = 1410/5 = 282.

46. A company's laptop sales were: 2021: 290 units 2022: 180 units 2023: 230 units 2024: 300 units 2025: 320 units What was the percentage change in sales from 2021 to 2022?

  1. 42.93% decrease
  2. 37.93% increase
  3. 37.93% decrease
  4. 61.11% decrease
Answer

C. 37.93% decrease Change = -110 on 290 = -37.93%.

47. A company's laptop sales were: 2021: 330 units 2022: 180 units 2023: 280 units 2024: 130 units 2025: 550 units In which year were sales the highest?

  1. 2022
  2. 2021
  3. 2023
  4. 2025
Answer

D. 2025 The largest value is 550 in 2025.

48. A company's laptop sales were: 2021: 540 units 2022: 190 units 2023: 600 units 2024: 410 units 2025: 510 units What is the average yearly sale?

  1. 448 units
  2. 495 units
  3. 450 units
  4. 360 units
Answer

C. 450 units Total = 2250. Average = 2250/5 = 450.

49. A company's laptop sales were: 2021: 450 units 2022: 300 units 2023: 600 units 2024: 520 units 2025: 520 units What was the percentage change in sales from 2022 to 2023?

  1. 50% increase
  2. 100% increase
  3. 100% decrease
  4. 105% increase
Answer

B. 100% increase Change = 300 on 300 = 100%.

50. A company's laptop sales were: 2021: 440 units 2022: 320 units 2023: 150 units 2024: 580 units 2025: 190 units What is the average yearly sale?

  1. 336 units
  2. 334 units
  3. 420 units
  4. 269 units
Answer

A. 336 units Total = 1680. Average = 1680/5 = 336.

51. A store sold 118 pens on Monday, 136 on Tuesday, and 129 on Wednesday. How many pens were sold in total?

  1. 383
  2. 386
  3. 378
  4. 382
Answer

A. 383 Total = 118+136+129 = 383.

52. A store sold 74 pens on Monday, 94 on Tuesday, and 83 on Wednesday. How many pens were sold in total?

  1. 248
  2. 251
  3. 249
  4. 261
Answer

B. 251 Total = 74+94+83 = 251.

53. A store sold 57 pens on Monday, 59 on Tuesday, and 66 on Wednesday. How many pens were sold in total?

  1. 185
  2. 182
  3. 179
  4. 181
Answer

B. 182 Total = 57+59+66 = 182.

54. A store sold 29 pens on Monday, 33 on Tuesday, and 35 on Wednesday. How many pens were sold in total?

  1. 102
  2. 97
  3. 87
  4. 96
Answer

B. 97 Total = 29+33+35 = 97.

55. A store sold 84 pens on Monday, 92 on Tuesday, and 95 on Wednesday. How many pens were sold in total?

  1. 261
  2. 270
  3. 271
  4. 269
Answer

C. 271 Total = 84+92+95 = 271.

56. A store sold 116 pens on Monday, 132 on Tuesday, and 126 on Wednesday. How many pens were sold in total?

  1. 371
  2. 377
  3. 374
  4. 379
Answer

C. 374 Total = 116+132+126 = 374.

57. A store sold 85 pens on Monday, 92 on Tuesday, and 99 on Wednesday. How many pens were sold in total?

  1. 276
  2. 281
  3. 277
  4. 269
Answer

A. 276 Total = 85+92+99 = 276.

58. A store sold 20 pens on Monday, 23 on Tuesday, and 22 on Wednesday. How many pens were sold in total?

  1. 68
  2. 62
  3. 58
  4. 65
Answer

D. 65 Total = 20+23+22 = 65.

59. A store sold 87 pens on Monday, 93 on Tuesday, and 94 on Wednesday. How many pens were sold in total?

  1. 284
  2. 267
  3. 274
  4. 276
Answer

C. 274 Total = 87+93+94 = 274.

60. A store sold 107 pens on Monday, 123 on Tuesday, and 116 on Wednesday. How many pens were sold in total?

  1. 344
  2. 341
  3. 345
  4. 346
Answer

D. 346 Total = 107+123+116 = 346.

61. A store sold 79 pens on Monday, 84 on Tuesday, and 83 on Wednesday. How many pens were sold in total?

  1. 244
  2. 246
  3. 248
  4. 251
Answer

B. 246 Total = 79+84+83 = 246.

62. A store sold 12 pens on Monday, 17 on Tuesday, and 24 on Wednesday. How many pens were sold in total?

  1. 53
  2. 52
  3. 48
  4. 56
Answer

A. 53 Total = 12+17+24 = 53.

Mock test

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