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Average Questions Worksheet

Quantitative aptitude lesson 16: Averages · Set 510 · 40 questions
TalentJR

The method (Think in totals): Average = total ÷ how many; total = average × how many. A number added or removed: compare the new total with the old total. Two groups together: add the two totals, then divide by everyone.

NameDateTime takenScore ___ / 40
  1. 1.Marks of 5 friends in a quiz: 75, 85, 65, 70, 65. What is their average mark?
  2. 2.A shop sells an average of 65 kg of sugar a day for 2 days, and then 77 kg a day for the next 2 days. What is the average sale per day for all 4 days (in kg)?
  3. 3.The average of 8 numbers is 17. When one more number is added, the average becomes 23. What number was added?
  4. 4.The average weight of 12 children is 40 kg. One child, who weighs 73 kg, leaves the group. What is the new average weight (in kg)?
  5. 5.The average weight of 10 children is 35 kg. One child, who weighs 53 kg, leaves the group. What is the new average weight (in kg)?
  6. 6.Kavya’s batting average after 9 innings is 44 runs. How many runs must Kavya score in the next innings to raise the average to 45?
  7. 7.A shop sells an average of 79 kg of sugar a day for 3 days, and then 59 kg a day for the next 2 days. What is the average sale per day for all 5 days (in kg)?
  8. 8.A shop sells an average of 31 kg of sugar a day for 3 days, and then 51 kg a day for the next 2 days. What is the average sale per day for all 5 days (in kg)?
  9. 9.Diya’s batting average after 7 innings is 40 runs. How many runs must Diya score in the next innings to raise the average to 45?
  10. 10.Marks of 6 friends in a quiz: 78, 76, 77, 87, 66, 72. What is their average mark?
  11. 11.The average weight of 9 children is 28 kg. One child, who weighs 36 kg, leaves the group. What is the new average weight (in kg)?
  12. 12.The average weight of 6 children is 45 kg. One child, who weighs 55 kg, leaves the group. What is the new average weight (in kg)?
  13. 13.Marks of 5 friends in a quiz: 56, 77, 60, 72, 85. What is their average mark?
  14. 14.Marks of 4 friends in a quiz: 40, 44, 46, 70. What is their average mark?
  15. 15.A shop sells an average of 75 kg of sugar a day for 4 days, and then 33 kg a day for the next 3 days. What is the average sale per day for all 7 days (in kg)?
  16. 16.Marks of 4 friends in a quiz: 26, 37, 12, 29. What is their average mark?
  17. 17.The average of 5 numbers is 17. When one more number is added, the average becomes 19. What number was added?
  18. 18.The average of 5 numbers is 22. When one more number is added, the average becomes 23. What number was added?
  19. 19.Marks of 4 friends in a quiz: 48, 29, 38, 25. What is their average mark?
  20. 20.A shop sells an average of 30 kg of sugar a day for 5 days, and then 37 kg a day for the next 2 days. What is the average sale per day for all 7 days (in kg)?
  21. 21.A shop sells an average of 35 kg of sugar a day for 3 days, and then 21 kg a day for the next 3 days. What is the average sale per day for all 6 days (in kg)?
  22. 22.A shop sells an average of 50 kg of sugar a day for 4 days, and then 59 kg a day for the next 2 days. What is the average sale per day for all 6 days (in kg)?
  23. 23.Marks of 6 friends in a quiz: 91, 97, 97, 80, 75, 94. What is their average mark?
  24. 24.Marks of 4 friends in a quiz: 38, 54, 34, 46. What is their average mark?
  25. 25.A shop sells an average of 43 kg of sugar a day for 4 days, and then 68 kg a day for the next 6 days. What is the average sale per day for all 10 days (in kg)?
  26. 26.Marks of 6 friends in a quiz: 74, 83, 80, 70, 62, 75. What is their average mark?
  27. 27.A shop sells an average of 67 kg of sugar a day for 6 days, and then 25 kg a day for the next 6 days. What is the average sale per day for all 12 days (in kg)?
  28. 28.A shop sells an average of 52 kg of sugar a day for 6 days, and then 57 kg a day for the next 4 days. What is the average sale per day for all 10 days (in kg)?
  29. 29.Marks of 6 friends in a quiz: 88, 99, 82, 91, 84, 96. What is their average mark?
  30. 30.A shop sells an average of 25 kg of sugar a day for 6 days, and then 73 kg a day for the next 6 days. What is the average sale per day for all 12 days (in kg)?
  31. 31.The average of 6 numbers is 50. When one more number is added, the average becomes 54. What number was added?
  32. 32.Marks of 5 friends in a quiz: 83, 100, 88, 76, 88. What is their average mark?
  33. 33.The average of 4 numbers is 41. When one more number is added, the average becomes 42. What number was added?
  34. 34.Marks of 4 friends in a quiz: 59, 68, 60, 97. What is their average mark?
  35. 35.The average of 6 numbers is 57. When one more number is added, the average becomes 63. What number was added?
  36. 36.Marks of 4 friends in a quiz: 75, 87, 83, 47. What is their average mark?
  37. 37.A shop sells an average of 56 kg of sugar a day for 3 days, and then 77 kg a day for the next 6 days. What is the average sale per day for all 9 days (in kg)?
  38. 38.A shop sells an average of 30 kg of sugar a day for 6 days, and then 26 kg a day for the next 6 days. What is the average sale per day for all 12 days (in kg)?
  39. 39.The average of 9 numbers is 41. When one more number is added, the average becomes 43. What number was added?
  40. 40.Marks of 6 friends in a quiz: 66, 74, 62, 87, 81, 62. What is their average mark?

Answer key

  1. 72
  2. 71
  3. 71
  4. 37
  5. 33
  6. 54
  7. 71
  8. 39
  9. 80
  10. 76
  11. 27
  12. 43
  13. 70
  14. 50
  15. 57
  16. 26
  17. 29
  18. 28
  19. 35
  20. 32
  21. 28
  22. 53
  23. 89
  24. 43
  25. 58
  26. 74
  27. 46
  28. 54
  29. 90
  30. 49
  31. 78
  32. 87
  33. 46
  34. 71
  35. 99
  36. 73
  37. 70
  38. 28
  39. 61
  40. 72

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