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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 736 · 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 water tank holds 2880 litres. 5% of the water is used. How many litres are left?
  2. 2.A shop sells 3780 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹480 to ₹288. By what percent did it come down?
  4. 4.A water tank holds 2300 litres. 5% of the water is used. How many litres are left?
  5. 5.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  6. 6.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹660 to ₹825. By what percent did it go up?
  8. 8.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  9. 9.The price of a bicycle is ₹460. It goes up by 50%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹560 to ₹336. By what percent did it come down?
  11. 11.The price of a bicycle is ₹3580. It goes up by 20%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹480 to ₹624. By what percent did it go up?
  13. 13.A water tank holds 260 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹80. It goes up by 5%. What is the new price (in ₹)?
  15. 15.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹960 to ₹912. By what percent did it come down?
  17. 17.A water tank holds 300 litres. 20% of the water is used. How many litres are left?
  18. 18.A water tank holds 1300 litres. 25% of the water is used. How many litres are left?
  19. 19.A shop sells 3760 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  20. 20.A water tank holds 4000 litres. 15% of the water is used. How many litres are left?
  21. 21.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹3760. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a bicycle is ₹4580. It goes up by 10%. What is the new price (in ₹)?
  24. 24.A water tank holds 4760 litres. 25% of the water is used. How many litres are left?
  25. 25.A water tank holds 980 litres. 15% of the water is used. How many litres are left?
  26. 26.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹1840 to ₹2024. By what percent did it go up?
  28. 28.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  29. 29.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  30. 30.A shop sells 860 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹3040 to ₹2736. By what percent did it come down?
  32. 32.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  33. 33.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  34. 34.The price of a bicycle is ₹2260. It goes up by 50%. What is the new price (in ₹)?
  35. 35.A water tank holds 4500 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹200. It goes up by 10%. What is the new price (in ₹)?
  37. 37.A water tank holds 3180 litres. 40% of the water is used. How many litres are left?
  38. 38.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
  39. 39.A shop sells 1000 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  40. 40.A water tank holds 520 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 2736
  2. 5292
  3. 40
  4. 2185
  5. 32.5
  6. 55
  7. 25
  8. 57.5
  9. 690
  10. 40
  11. 4296
  12. 30
  13. 247
  14. 84
  15. 80
  16. 5
  17. 240
  18. 975
  19. 3948
  20. 3400
  21. 32
  22. 4136
  23. 5038
  24. 3570
  25. 833
  26. 33.5
  27. 10
  28. 19.25
  29. 27.5
  30. 1032
  31. 10
  32. 56
  33. 50
  34. 3390
  35. 4275
  36. 220
  37. 1908
  38. 1206
  39. 1100
  40. 494

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