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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 677 · 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 comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹4400 to ₹3080. By what percent did it come down?
  3. 3.A water tank holds 3840 litres. 10% of the water is used. How many litres are left?
  4. 4.A water tank holds 2040 litres. 15% of the water is used. How many litres are left?
  5. 5.A town has 1220 people. Its population grows by 5%. How many people live there now?
  6. 6.The price of a bicycle is ₹1180. It goes up by 25%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹340 to ₹510. By what percent did it go up?
  8. 8.A water tank holds 2940 litres. 15% of the water is used. How many litres are left?
  9. 9.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  10. 10.A shop sells 680 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  11. 11.A water tank holds 1560 litres. 5% of the water is used. How many litres are left?
  12. 12.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  13. 13.A water tank holds 4260 litres. 15% of the water is used. How many litres are left?
  14. 14.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  15. 15.The price of a bicycle is ₹680. It goes up by 15%. What is the new price (in ₹)?
  16. 16.The price of a bicycle is ₹1320. It goes up by 25%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹2980 to ₹2086. By what percent did it come down?
  18. 18.A water tank holds 1220 litres. 50% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹4060 to ₹6090. By what percent did it go up?
  20. 20.A town has 120 people. Its population grows by 5%. How many people live there now?
  21. 21.The price of a school bag changes from ₹1940 to ₹2134. By what percent did it go up?
  22. 22.A water tank holds 3080 litres. 5% of the water is used. How many litres are left?
  23. 23.A water tank holds 3580 litres. 10% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹440 to ₹528. By what percent did it go up?
  25. 25.A town has 1080 people. Its population grows by 15%. How many people live there now?
  26. 26.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹2080. It goes up by 10%. What is the new price (in ₹)?
  28. 28.A town has 2540 people. Its population grows by 30%. How many people live there now?
  29. 29.The price of a school bag changes from ₹4600 to ₹2760. By what percent did it come down?
  30. 30.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  31. 31.The price of a bicycle is ₹1920. It goes up by 10%. What is the new price (in ₹)?
  32. 32.The price of a school bag changes from ₹100 to ₹60. By what percent did it come down?
  33. 33.A water tank holds 540 litres. 20% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹820. It goes up by 10%. What is the new price (in ₹)?
  35. 35.A water tank holds 1040 litres. 50% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1100 to ₹770. By what percent did it come down?
  37. 37.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  38. 38.A water tank holds 4040 litres. 5% of the water is used. How many litres are left?
  39. 39.A shop sells 4560 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  40. 40.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =

Answer key

  1. 32.5
  2. 30
  3. 3456
  4. 1734
  5. 1281
  6. 1475
  7. 50
  8. 2499
  9. 40
  10. 748
  11. 1482
  12. 57.5
  13. 3621
  14. 33
  15. 782
  16. 1650
  17. 30
  18. 610
  19. 50
  20. 126
  21. 10
  22. 2926
  23. 3222
  24. 20
  25. 1242
  26. 20.75
  27. 2288
  28. 3302
  29. 40
  30. 32
  31. 2112
  32. 40
  33. 432
  34. 902
  35. 520
  36. 30
  37. 37
  38. 3838
  39. 5472
  40. 72.5

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