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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 619 · 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 shop sells 4920 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  2. 2.A shop sells 960 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  3. 3.A water tank holds 3480 litres. 50% of the water is used. How many litres are left?
  4. 4.A town has 1120 people. Its population grows by 40%. How many people live there now?
  5. 5.The price of a bicycle is ₹1920. It goes up by 5%. What is the new price (in ₹)?
  6. 6.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  7. 7.A water tank holds 1020 litres. 30% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹720. It goes up by 10%. What is the new price (in ₹)?
  9. 9.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 3140 litres. 5% of the water is used. How many litres are left?
  11. 11.A water tank holds 60 litres. 10% of the water is used. How many litres are left?
  12. 12.A shop sells 1400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  13. 13.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 2600 litres. 10% of the water is used. How many litres are left?
  15. 15.A water tank holds 4380 litres. 20% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹2300. It goes up by 40%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹1560 to ₹2028. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹1720 to ₹2580. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹4380 to ₹5694. By what percent did it go up?
  20. 20.The price of a bicycle is ₹3240. It goes up by 5%. What is the new price (in ₹)?
  21. 21.A town has 4000 people. Its population grows by 10%. How many people live there now?
  22. 22.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.A town has 1180 people. Its population grows by 10%. How many people live there now?
  24. 24.A water tank holds 3620 litres. 30% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹4940 to ₹5187. By what percent did it go up?
  26. 26.A water tank holds 380 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹3660 to ₹3843. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹4140 to ₹2898. By what percent did it come down?
  29. 29.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  30. 30.A water tank holds 980 litres. 30% of the water is used. How many litres are left?
  31. 31.A shop sells 1300 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A water tank holds 3500 litres. 40% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹1060 to ₹1166. By what percent did it go up?
  34. 34.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 2320 litres. 5% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1960 to ₹2548. By what percent did it go up?
  37. 37.The price of a bicycle is ₹4520. It goes up by 10%. What is the new price (in ₹)?
  38. 38.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹400 to ₹200. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹360 to ₹180. By what percent did it come down?

Answer key

  1. 5658
  2. 1152
  3. 1740
  4. 1568
  5. 2016
  6. 49
  7. 714
  8. 792
  9. 20.75
  10. 2983
  11. 54
  12. 1540
  13. 82
  14. 2340
  15. 3504
  16. 3220
  17. 30
  18. 50
  19. 30
  20. 3402
  21. 4400
  22. 57.5
  23. 1298
  24. 2534
  25. 5
  26. 361
  27. 5
  28. 30
  29. 35
  30. 686
  31. 1365
  32. 2100
  33. 10
  34. 20.75
  35. 2204
  36. 30
  37. 4972
  38. 110
  39. 50
  40. 50

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