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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 711 · 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 3240 litres. 30% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹1200 to ₹1500. By what percent did it go up?
  3. 3.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  4. 4.The price of a bicycle is ₹4200. It goes up by 40%. What is the new price (in ₹)?
  5. 5.A water tank holds 2960 litres. 10% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹4520 to ₹4972. By what percent did it go up?
  7. 7.The price of a school bag changes from ₹960 to ₹816. By what percent did it come down?
  8. 8.The price of a bicycle is ₹4000. It goes up by 40%. What is the new price (in ₹)?
  9. 9.A water tank holds 620 litres. 50% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹980 to ₹1029. By what percent did it go up?
  11. 11.A price goes up by 20% and then goes up by 25% more. By what percent has it gone up in all? =
  12. 12.The price of a bicycle is ₹4200. It goes up by 50%. What is the new price (in ₹)?
  13. 13.A shop sells 2160 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  14. 14.A water tank holds 220 litres. 10% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹760 to ₹608. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹2820 to ₹3948. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹2980 to ₹3427. By what percent did it go up?
  18. 18.The price of a bicycle is ₹3180. It goes up by 30%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹2460 to ₹1722. By what percent did it come down?
  20. 20.A water tank holds 3860 litres. 15% of the water is used. How many litres are left?
  21. 21.A water tank holds 1120 litres. 20% of the water is used. How many litres are left?
  22. 22.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  23. 23.A shop sells 3920 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  24. 24.The price of a bicycle is ₹720. It goes up by 30%. What is the new price (in ₹)?
  25. 25.A shop sells 600 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹2680 to ₹3082. By what percent did it go up?
  27. 27.The price of a bicycle is ₹280. It goes up by 10%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹2380 to ₹1785. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹2020 to ₹2323. By what percent did it go up?
  30. 30.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  31. 31.The price of a school bag changes from ₹3640 to ₹3094. By what percent did it come down?
  32. 32.The price of a bicycle is ₹1720. It goes up by 10%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹3620 to ₹2715. By what percent did it come down?
  34. 34.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  37. 37.A water tank holds 4420 litres. 5% of the water is used. How many litres are left?
  38. 38.A shop sells 2040 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  39. 39.A water tank holds 3960 litres. 30% of the water is used. How many litres are left?
  40. 40.A town has 1940 people. Its population grows by 25%. How many people live there now?

Answer key

  1. 2268
  2. 25
  3. 58
  4. 5880
  5. 2664
  6. 10
  7. 15
  8. 5600
  9. 310
  10. 5
  11. 50
  12. 6300
  13. 2700
  14. 198
  15. 20
  16. 40
  17. 15
  18. 4134
  19. 30
  20. 3281
  21. 896
  22. 46
  23. 4704
  24. 936
  25. 660
  26. 15
  27. 308
  28. 25
  29. 15
  30. 40
  31. 15
  32. 1892
  33. 25
  34. 33.5
  35. 43
  36. 23.5
  37. 4199
  38. 2448
  39. 2772
  40. 2425

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