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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 464 · 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 15% and then comes down by 10% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹3500 to ₹3675. By what percent did it go up?
  3. 3.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  4. 4.The price of a bicycle is ₹4400. It goes up by 15%. What is the new price (in ₹)?
  5. 5.The price of a bicycle is ₹2020. It goes up by 30%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹1100 to ₹1375. By what percent did it go up?
  7. 7.A shop sells 4140 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  8. 8.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  9. 9.A shop sells 2220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  10. 10.The price of a school bag changes from ₹720 to ₹864. By what percent did it go up?
  11. 11.A water tank holds 1820 litres. 5% of the water is used. How many litres are left?
  12. 12.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 3720 litres. 5% of the water is used. How many litres are left?
  14. 14.A water tank holds 160 litres. 10% of the water is used. How many litres are left?
  15. 15.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  16. 16.A water tank holds 4220 litres. 10% of the water is used. How many litres are left?
  17. 17.A town has 2760 people. Its population grows by 25%. How many people live there now?
  18. 18.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹1000 to ₹950. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹2080 to ₹2288. By what percent did it go up?
  21. 21.A shop sells 3160 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹1760 to ₹880. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹120 to ₹168. By what percent did it go up?
  24. 24.A water tank holds 220 litres. 5% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹2560. It goes up by 30%. What is the new price (in ₹)?
  26. 26.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹1900 to ₹2660. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹4760 to ₹4522. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹1020 to ₹1071. By what percent did it go up?
  30. 30.The price of a bicycle is ₹520. It goes up by 10%. What is the new price (in ₹)?
  31. 31.A water tank holds 1460 litres. 5% of the water is used. How many litres are left?
  32. 32.A town has 1080 people. Its population grows by 40%. How many people live there now?
  33. 33.The price of a school bag changes from ₹1580 to ₹1106. By what percent did it come down?
  34. 34.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.A town has 2380 people. Its population grows by 20%. How many people live there now?
  36. 36.A water tank holds 1780 litres. 40% of the water is used. How many litres are left?
  37. 37.A water tank holds 2600 litres. 25% of the water is used. How many litres are left?
  38. 38.The price of a bicycle is ₹3860. It goes up by 30%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹1440 to ₹1584. By what percent did it go up?
  40. 40.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =

Answer key

  1. 23.5
  2. 5
  3. 27.5
  4. 5060
  5. 2626
  6. 25
  7. 5796
  8. 75
  9. 2442
  10. 20
  11. 1729
  12. 47
  13. 3534
  14. 144
  15. 82
  16. 3798
  17. 3450
  18. 54
  19. 5
  20. 10
  21. 3950
  22. 50
  23. 40
  24. 209
  25. 3328
  26. 54
  27. 40
  28. 5
  29. 5
  30. 572
  31. 1387
  32. 1512
  33. 30
  34. 51
  35. 2856
  36. 1068
  37. 1950
  38. 5018
  39. 10
  40. 12.5

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