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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 33 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹4260. It goes up by 25%. What is the new price (in ₹)?
  3. 3.A water tank holds 2940 litres. 10% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹3120 to ₹2964. By what percent did it come down?
  5. 5.The price of a bicycle is ₹4540. It goes up by 5%. What is the new price (in ₹)?
  6. 6.The price of a bicycle is ₹4240. It goes up by 50%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹860 to ₹731. By what percent did it come down?
  8. 8.A town has 4980 people. Its population grows by 15%. How many people live there now?
  9. 9.The price of a school bag changes from ₹4780 to ₹4541. By what percent did it come down?
  10. 10.A shop sells 60 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  11. 11.The price of a bicycle is ₹3380. It goes up by 5%. What is the new price (in ₹)?
  12. 12.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  13. 13.A town has 3320 people. Its population grows by 40%. How many people live there now?
  14. 14.A water tank holds 640 litres. 30% of the water is used. How many litres are left?
  15. 15.A water tank holds 5000 litres. 15% of the water is used. How many litres are left?
  16. 16.A water tank holds 4120 litres. 10% of the water is used. How many litres are left?
  17. 17.A water tank holds 2100 litres. 5% of the water is used. How many litres are left?
  18. 18.A town has 3980 people. Its population grows by 20%. How many people live there now?
  19. 19.A town has 4300 people. Its population grows by 40%. How many people live there now?
  20. 20.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹3360 to ₹3528. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹520 to ₹572. By what percent did it go up?
  24. 24.A water tank holds 2060 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹840 to ₹966. By what percent did it go up?
  26. 26.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹320 to ₹352. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹420 to ₹441. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹660 to ₹561. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹3960 to ₹4158. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹4880 to ₹5124. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹3080 to ₹3850. By what percent did it go up?
  33. 33.The price of a bicycle is ₹3080. It goes up by 20%. What is the new price (in ₹)?
  34. 34.A water tank holds 4860 litres. 15% of the water is used. How many litres are left?
  35. 35.A water tank holds 2160 litres. 20% of the water is used. How many litres are left?
  36. 36.A water tank holds 3500 litres. 25% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹3760 to ₹2256. By what percent did it come down?
  38. 38.A town has 3500 people. Its population grows by 10%. How many people live there now?
  39. 39.The price of a bicycle is ₹3660. It goes up by 30%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹3820 to ₹2865. By what percent did it come down?

Answer key

  1. 33
  2. 5325
  3. 2646
  4. 5
  5. 4767
  6. 6360
  7. 15
  8. 5727
  9. 5
  10. 66
  11. 3549
  12. 20.75
  13. 4648
  14. 448
  15. 4250
  16. 3708
  17. 1995
  18. 4776
  19. 6020
  20. 47
  21. 26
  22. 5
  23. 10
  24. 1236
  25. 15
  26. 47.5
  27. 10
  28. 5
  29. 15
  30. 5
  31. 5
  32. 25
  33. 3696
  34. 4131
  35. 1728
  36. 2625
  37. 40
  38. 3850
  39. 4758
  40. 25

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