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Average Questions Worksheet

Quantitative aptitude lesson 16: Averages · Set 640 · 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.The average of 5 numbers is 57. When one more number is added, the average becomes 61. What number was added?
  2. 2.The average of 4 numbers is 17. When one more number is added, the average becomes 20. What number was added?
  3. 3.The average of 8 numbers is 27. When one more number is added, the average becomes 28. What number was added?
  4. 4.The average weight of 10 children is 48 kg. One child, who weighs 75 kg, leaves the group. What is the new average weight (in kg)?
  5. 5.The average weight of 5 children is 41 kg. One child, who weighs 49 kg, leaves the group. What is the new average weight (in kg)?
  6. 6.A shop sells an average of 65 kg of sugar a day for 5 days, and then 33 kg a day for the next 5 days. What is the average sale per day for all 10 days (in kg)?
  7. 7.Marks of 5 friends in a quiz: 71, 71, 90, 69, 94. What is their average mark?
  8. 8.Marks of 6 friends in a quiz: 38, 37, 55, 40, 44, 38. What is their average mark?
  9. 9.The average of 5 numbers is 20. When one more number is added, the average becomes 26. What number was added?
  10. 10.A shop sells an average of 40 kg of sugar a day for 6 days, and then 73 kg a day for the next 5 days. What is the average sale per day for all 11 days (in kg)?
  11. 11.Marks of 6 friends in a quiz: 42, 46, 49, 56, 52, 43. What is their average mark?
  12. 12.Marks of 6 friends in a quiz: 29, 24, 41, 28, 41, 29. What is their average mark?
  13. 13.Marks of 5 friends in a quiz: 40, 68, 63, 60, 44. What is their average mark?
  14. 14.Marks of 5 friends in a quiz: 82, 88, 85, 78, 72. What is their average mark?
  15. 15.Marks of 5 friends in a quiz: 78, 100, 95, 80, 77. What is their average mark?
  16. 16.Marks of 5 friends in a quiz: 90, 98, 93, 87, 72. What is their average mark?
  17. 17.A shop sells an average of 28 kg of sugar a day for 2 days, and then 20 kg a day for the next 2 days. What is the average sale per day for all 4 days (in kg)?
  18. 18.The average of 4 numbers is 58. When one more number is added, the average becomes 63. What number was added?
  19. 19.A shop sells an average of 80 kg of sugar a day for 6 days, and then 56 kg a day for the next 6 days. What is the average sale per day for all 12 days (in kg)?
  20. 20.The average weight of 12 children is 32 kg. One child, who weighs 43 kg, leaves the group. What is the new average weight (in kg)?
  21. 21.A shop sells an average of 40 kg of sugar a day for 3 days, and then 45 kg a day for the next 2 days. What is the average sale per day for all 5 days (in kg)?
  22. 22.Marks of 6 friends in a quiz: 76, 93, 101, 89, 88, 93. What is their average mark?
  23. 23.Marks of 4 friends in a quiz: 67, 66, 52, 55. What is their average mark?
  24. 24.Tara’s batting average after 13 innings is 29 runs. How many runs must Tara score in the next innings to raise the average to 30?
  25. 25.A shop sells an average of 25 kg of sugar a day for 3 days, and then 53 kg a day for the next 4 days. What is the average sale per day for all 7 days (in kg)?
  26. 26.The average weight of 5 children is 28 kg. One child, who weighs 32 kg, leaves the group. What is the new average weight (in kg)?
  27. 27.Arjun’s batting average after 5 innings is 46 runs. How many runs must Arjun score in the next innings to raise the average to 49?
  28. 28.The average of 4 numbers is 15. When one more number is added, the average becomes 16. What number was added?
  29. 29.Marks of 4 friends in a quiz: 77, 63, 58, 50. What is their average mark?
  30. 30.Dev’s batting average after 9 innings is 38 runs. How many runs must Dev score in the next innings to raise the average to 42?
  31. 31.The average of 8 numbers is 48. When one more number is added, the average becomes 52. What number was added?
  32. 32.Marks of 4 friends in a quiz: 57, 61, 49, 17. What is their average mark?
  33. 33.Marks of 4 friends in a quiz: 33, 22, 30, 27. What is their average mark?
  34. 34.A shop sells an average of 37 kg of sugar a day for 4 days, and then 28 kg a day for the next 2 days. What is the average sale per day for all 6 days (in kg)?
  35. 35.A shop sells an average of 47 kg of sugar a day for 3 days, and then 55 kg a day for the next 5 days. What is the average sale per day for all 8 days (in kg)?
  36. 36.Meera’s batting average after 9 innings is 36 runs. How many runs must Meera score in the next innings to raise the average to 38?
  37. 37.Marks of 5 friends in a quiz: 53, 52, 76, 73, 51. What is their average mark?
  38. 38.The average weight of 7 children is 39 kg. One child, who weighs 45 kg, leaves the group. What is the new average weight (in kg)?
  39. 39.The average weight of 5 children is 43 kg. One child, who weighs 55 kg, leaves the group. What is the new average weight (in kg)?
  40. 40.Marks of 4 friends in a quiz: 45, 24, 28, 27. What is their average mark?

Answer key

  1. 81
  2. 32
  3. 36
  4. 45
  5. 39
  6. 49
  7. 79
  8. 42
  9. 56
  10. 55
  11. 48
  12. 32
  13. 55
  14. 81
  15. 86
  16. 88
  17. 24
  18. 83
  19. 68
  20. 31
  21. 42
  22. 90
  23. 60
  24. 43
  25. 41
  26. 27
  27. 64
  28. 20
  29. 62
  30. 78
  31. 84
  32. 46
  33. 28
  34. 34
  35. 52
  36. 56
  37. 61
  38. 38
  39. 40
  40. 31

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