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Average Questions Worksheet

Quantitative aptitude lesson 16: Averages · Set 99 · 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 weight of 11 children is 36 kg. One child, who weighs 66 kg, leaves the group. What is the new average weight (in kg)?
  2. 2.Marks of 5 friends in a quiz: 42, 35, 50, 33, 35. What is their average mark?
  3. 3.The average weight of 10 children is 29 kg. One child, who weighs 47 kg, leaves the group. What is the new average weight (in kg)?
  4. 4.The average of 8 numbers is 32. When one more number is added, the average becomes 34. What number was added?
  5. 5.Rahul’s batting average after 10 innings is 30 runs. How many runs must Rahul score in the next innings to raise the average to 31?
  6. 6.The average of 4 numbers is 32. When one more number is added, the average becomes 36. What number was added?
  7. 7.Marks of 5 friends in a quiz: 90, 86, 68, 78, 88. What is their average mark?
  8. 8.The average of 4 numbers is 32. When one more number is added, the average becomes 33. What number was added?
  9. 9.The average of 5 numbers is 60. When one more number is added, the average becomes 65. What number was added?
  10. 10.The average weight of 11 children is 40 kg. One child, who weighs 70 kg, leaves the group. What is the new average weight (in kg)?
  11. 11.The average of 8 numbers is 23. When one more number is added, the average becomes 26. What number was added?
  12. 12.The average of 8 numbers is 23. When one more number is added, the average becomes 25. What number was added?
  13. 13.The average weight of 5 children is 42 kg. One child, who weighs 50 kg, leaves the group. What is the new average weight (in kg)?
  14. 14.The average weight of 5 children is 30 kg. One child, who weighs 42 kg, leaves the group. What is the new average weight (in kg)?
  15. 15.The average of 6 numbers is 46. When one more number is added, the average becomes 51. What number was added?
  16. 16.Tara’s batting average after 7 innings is 42 runs. How many runs must Tara score in the next innings to raise the average to 43?
  17. 17.The average of 7 numbers is 20. When one more number is added, the average becomes 21. What number was added?
  18. 18.Marks of 6 friends in a quiz: 18, 18, 23, 17, 17, 63. What is their average mark?
  19. 19.Marks of 6 friends in a quiz: 71, 45, 49, 71, 61, 39. What is their average mark?
  20. 20.The average of 4 numbers is 34. When one more number is added, the average becomes 37. What number was added?
  21. 21.The average of 5 numbers is 31. When one more number is added, the average becomes 34. What number was added?
  22. 22.The average weight of 8 children is 34 kg. One child, who weighs 48 kg, leaves the group. What is the new average weight (in kg)?
  23. 23.The average weight of 12 children is 46 kg. One child, who weighs 68 kg, leaves the group. What is the new average weight (in kg)?
  24. 24.Marks of 6 friends in a quiz: 77, 79, 71, 78, 90, 97. What is their average mark?
  25. 25.Marks of 5 friends in a quiz: 34, 27, 27, 40, 77. What is their average mark?
  26. 26.The average of 5 numbers is 35. When one more number is added, the average becomes 36. What number was added?
  27. 27.A shop sells an average of 71 kg of sugar a day for 6 days, and then 21 kg a day for the next 6 days. What is the average sale per day for all 12 days (in kg)?
  28. 28.The average weight of 12 children is 35 kg. One child, who weighs 57 kg, leaves the group. What is the new average weight (in kg)?
  29. 29.The average weight of 8 children is 27 kg. One child, who weighs 41 kg, leaves the group. What is the new average weight (in kg)?
  30. 30.Marks of 5 friends in a quiz: 75, 85, 95, 83, 72. What is their average mark?
  31. 31.Marks of 6 friends in a quiz: 13, 14, 33, 30, 16, 26. What is their average mark?
  32. 32.The average weight of 12 children is 33 kg. One child, who weighs 55 kg, leaves the group. What is the new average weight (in kg)?
  33. 33.The average weight of 10 children is 38 kg. One child, who weighs 56 kg, leaves the group. What is the new average weight (in kg)?
  34. 34.The average of 4 numbers is 20. When one more number is added, the average becomes 23. What number was added?
  35. 35.The average of 9 numbers is 19. When one more number is added, the average becomes 23. What number was added?
  36. 36.The average weight of 6 children is 46 kg. One child, who weighs 56 kg, leaves the group. What is the new average weight (in kg)?
  37. 37.The average weight of 5 children is 45 kg. One child, who weighs 49 kg, leaves the group. What is the new average weight (in kg)?
  38. 38.Priya’s batting average after 12 innings is 20 runs. How many runs must Priya score in the next innings to raise the average to 22?
  39. 39.The average weight of 8 children is 45 kg. One child, who weighs 66 kg, leaves the group. What is the new average weight (in kg)?
  40. 40.Zoya’s batting average after 14 innings is 30 runs. How many runs must Zoya score in the next innings to raise the average to 32?

Answer key

  1. 33
  2. 39
  3. 27
  4. 50
  5. 41
  6. 52
  7. 82
  8. 37
  9. 90
  10. 37
  11. 50
  12. 41
  13. 40
  14. 27
  15. 81
  16. 50
  17. 28
  18. 26
  19. 56
  20. 49
  21. 49
  22. 32
  23. 44
  24. 82
  25. 41
  26. 41
  27. 46
  28. 33
  29. 25
  30. 82
  31. 22
  32. 31
  33. 36
  34. 35
  35. 59
  36. 44
  37. 44
  38. 46
  39. 42
  40. 60

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