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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 633 · 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 2360 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  2. 2.The price of a bicycle is ₹2760. It goes up by 25%. What is the new price (in ₹)?
  3. 3.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  4. 4.A water tank holds 1420 litres. 40% of the water is used. How many litres are left?
  5. 5.A water tank holds 740 litres. 10% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹200. It goes up by 30%. What is the new price (in ₹)?
  7. 7.A shop sells 4660 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  8. 8.A water tank holds 1840 litres. 5% of the water is used. How many litres are left?
  9. 9.A water tank holds 2260 litres. 10% of the water is used. How many litres are left?
  10. 10.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹2960. It goes up by 10%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹3440. It goes up by 20%. What is the new price (in ₹)?
  13. 13.A shop sells 2580 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 960 litres. 10% of the water is used. How many litres are left?
  15. 15.A water tank holds 4580 litres. 15% of the water is used. How many litres are left?
  16. 16.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.A water tank holds 2520 litres. 5% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹2620 to ₹3668. By what percent did it go up?
  19. 19.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  20. 20.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  21. 21.A shop sells 1240 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  22. 22.A water tank holds 1980 litres. 15% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4300 to ₹5160. By what percent did it go up?
  24. 24.A water tank holds 3220 litres. 15% of the water is used. How many litres are left?
  25. 25.A water tank holds 3860 litres. 25% of the water is used. How many litres are left?
  26. 26.A water tank holds 1160 litres. 15% of the water is used. How many litres are left?
  27. 27.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  28. 28.A shop sells 100 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  29. 29.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.The price of a bicycle is ₹3040. It goes up by 50%. What is the new price (in ₹)?
  31. 31.A shop sells 2400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹4420 to ₹5746. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹2520 to ₹3780. By what percent did it go up?
  34. 34.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  35. 35.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 4440 litres. 50% of the water is used. How many litres are left?
  37. 37.A water tank holds 4840 litres. 40% of the water is used. How many litres are left?
  38. 38.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  39. 39.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  40. 40.A shop sells 1240 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

Answer key

  1. 2832
  2. 3450
  3. 82
  4. 852
  5. 666
  6. 260
  7. 4893
  8. 1748
  9. 2034
  10. 62.5
  11. 3256
  12. 4128
  13. 3225
  14. 864
  15. 3893
  16. 58
  17. 2394
  18. 40
  19. 61
  20. 58
  21. 1736
  22. 1683
  23. 20
  24. 2737
  25. 2895
  26. 986
  27. 55
  28. 105
  29. 37
  30. 4560
  31. 2760
  32. 30
  33. 50
  34. 26.5
  35. 49.5
  36. 2220
  37. 2904
  38. 38
  39. 49
  40. 1302

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