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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 119 · 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.The price of a school bag changes from ₹2280 to ₹1710. By what percent did it come down?
  2. 2.A shop sells 2560 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  3. 3.A water tank holds 3560 litres. 15% of the water is used. How many litres are left?
  4. 4.A town has 4700 people. Its population grows by 20%. How many people live there now?
  5. 5.A water tank holds 320 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹2820 to ₹1410. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹3080 to ₹3850. By what percent did it go up?
  8. 8.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  9. 9.A town has 420 people. Its population grows by 50%. How many people live there now?
  10. 10.The price of a school bag changes from ₹600 to ₹300. By what percent did it come down?
  11. 11.A water tank holds 1600 litres. 10% of the water is used. How many litres are left?
  12. 12.A shop sells 4400 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  13. 13.The price of a school bag changes from ₹1600 to ₹800. By what percent did it come down?
  14. 14.A water tank holds 780 litres. 50% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹1300 to ₹1430. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹180 to ₹252. By what percent did it go up?
  17. 17.The price of a bicycle is ₹2200. It goes up by 40%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹4680. It goes up by 25%. What is the new price (in ₹)?
  19. 19.A water tank holds 4840 litres. 30% of the water is used. How many litres are left?
  20. 20.A town has 4040 people. Its population grows by 25%. How many people live there now?
  21. 21.The price of a school bag changes from ₹700 to ₹1050. By what percent did it go up?
  22. 22.A town has 1780 people. Its population grows by 40%. How many people live there now?
  23. 23.A water tank holds 4560 litres. 20% of the water is used. How many litres are left?
  24. 24.A shop sells 3420 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  25. 25.A water tank holds 2780 litres. 40% of the water is used. How many litres are left?
  26. 26.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹3260 to ₹4890. By what percent did it go up?
  28. 28.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  29. 29.A water tank holds 880 litres. 10% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹2060 to ₹1030. By what percent did it come down?
  31. 31.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹2320 to ₹1740. By what percent did it come down?
  33. 33.The price of a bicycle is ₹1960. It goes up by 5%. What is the new price (in ₹)?
  34. 34.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  35. 35.The price of a bicycle is ₹4280. It goes up by 5%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹360 to ₹432. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹920 to ₹966. By what percent did it go up?
  38. 38.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹660 to ₹561. By what percent did it come down?
  40. 40.A water tank holds 2720 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 25
  2. 2688
  3. 3026
  4. 5640
  5. 272
  6. 50
  7. 25
  8. 32
  9. 630
  10. 50
  11. 1440
  12. 6600
  13. 50
  14. 390
  15. 10
  16. 40
  17. 3080
  18. 5850
  19. 3388
  20. 5050
  21. 50
  22. 2492
  23. 3648
  24. 4104
  25. 1668
  26. 87.5
  27. 50
  28. 55
  29. 792
  30. 50
  31. 31.25
  32. 25
  33. 2058
  34. 32
  35. 4494
  36. 20
  37. 5
  38. 57.5
  39. 15
  40. 1360

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