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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 131 · 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 1320 litres. 20% of the water is used. How many litres are left?
  2. 2.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  3. 3.The price of a bicycle is ₹1640. It goes up by 30%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹1240 to ₹1302. By what percent did it go up?
  5. 5.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹2600. It goes up by 40%. What is the new price (in ₹)?
  7. 7.A water tank holds 2840 litres. 10% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹4960. It goes up by 20%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹3700 to ₹3145. By what percent did it come down?
  10. 10.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹3880 to ₹3104. By what percent did it come down?
  12. 12.The price of a bicycle is ₹2160. It goes up by 40%. What is the new price (in ₹)?
  13. 13.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹1400. It goes up by 30%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹3980 to ₹1990. By what percent did it come down?
  16. 16.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  17. 17.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  18. 18.A water tank holds 4980 litres. 5% of the water is used. How many litres are left?
  19. 19.A town has 4380 people. Its population grows by 25%. How many people live there now?
  20. 20.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 900 litres. 40% of the water is used. How many litres are left?
  22. 22.A town has 360 people. Its population grows by 40%. How many people live there now?
  23. 23.The price of a school bag changes from ₹2500 to ₹2125. By what percent did it come down?
  24. 24.A town has 660 people. Its population grows by 40%. How many people live there now?
  25. 25.The price of a bicycle is ₹4180. It goes up by 5%. What is the new price (in ₹)?
  26. 26.A water tank holds 3640 litres. 50% of the water is used. How many litres are left?
  27. 27.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹2220 to ₹1554. By what percent did it come down?
  29. 29.A shop sells 4740 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  30. 30.A water tank holds 460 litres. 15% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹3980. It goes up by 50%. What is the new price (in ₹)?
  32. 32.A town has 2160 people. Its population grows by 30%. How many people live there now?
  33. 33.The price of a school bag changes from ₹2940 to ₹2646. By what percent did it come down?
  34. 34.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  35. 35.The price of a school bag changes from ₹4980 to ₹4731. By what percent did it come down?
  36. 36.A shop sells 1100 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 4440 litres. 50% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹2480. It goes up by 10%. What is the new price (in ₹)?
  40. 40.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =

Answer key

  1. 1056
  2. 50
  3. 2132
  4. 5
  5. 125
  6. 3640
  7. 2556
  8. 5952
  9. 15
  10. 72.5
  11. 20
  12. 3024
  13. 32.5
  14. 1820
  15. 50
  16. 65
  17. 95
  18. 4731
  19. 5475
  20. 87.5
  21. 540
  22. 504
  23. 15
  24. 924
  25. 4389
  26. 1820
  27. 96
  28. 30
  29. 5688
  30. 391
  31. 5970
  32. 2808
  33. 10
  34. 32.5
  35. 5
  36. 1650
  37. 47
  38. 2220
  39. 2728
  40. 82

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