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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 905 · 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.The price of a school bag changes from ₹1080 to ₹1620. By what percent did it go up?
  2. 2.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  3. 3.The price of a bicycle is ₹140. It goes up by 10%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹4560 to ₹4788. By what percent did it go up?
  5. 5.A water tank holds 340 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹2960. It goes up by 40%. What is the new price (in ₹)?
  7. 7.A water tank holds 4600 litres. 30% of the water is used. How many litres are left?
  8. 8.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  9. 9.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  10. 10.A water tank holds 1040 litres. 50% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹2380 to ₹2737. By what percent did it go up?
  12. 12.A water tank holds 1380 litres. 10% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹4000 to ₹2400. By what percent did it come down?
  14. 14.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
  15. 15.A town has 4400 people. Its population grows by 5%. How many people live there now?
  16. 16.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  17. 17.A water tank holds 2280 litres. 10% of the water is used. How many litres are left?
  18. 18.A water tank holds 2160 litres. 10% of the water is used. How many litres are left?
  19. 19.A shop sells 4240 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  20. 20.A town has 2960 people. Its population grows by 10%. How many people live there now?
  21. 21.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹4560 to ₹2280. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹780 to ₹897. By what percent did it go up?
  26. 26.A town has 1780 people. Its population grows by 30%. How many people live there now?
  27. 27.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  28. 28.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  29. 29.The price of a bicycle is ₹4020. It goes up by 50%. What is the new price (in ₹)?
  30. 30.A water tank holds 1880 litres. 40% of the water is used. How many litres are left?
  31. 31.A shop sells 220 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  32. 32.The price of a bicycle is ₹3760. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  34. 34.The price of a bicycle is ₹4420. It goes up by 40%. What is the new price (in ₹)?
  35. 35.A water tank holds 1640 litres. 40% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹4220. It goes up by 5%. What is the new price (in ₹)?
  37. 37.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  38. 38.The price of a bicycle is ₹3180. It goes up by 20%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹4340 to ₹3255. By what percent did it come down?
  40. 40.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =

Answer key

  1. 50
  2. 2
  3. 154
  4. 5
  5. 289
  6. 4144
  7. 3220
  8. 70
  9. 52.5
  10. 520
  11. 15
  12. 1242
  13. 40
  14. 1206
  15. 4620
  16. 36.25
  17. 2052
  18. 1944
  19. 6360
  20. 3256
  21. 32.25
  22. 65
  23. 72.5
  24. 50
  25. 15
  26. 2314
  27. 5
  28. 35
  29. 6030
  30. 1128
  31. 264
  32. 4136
  33. 61
  34. 6188
  35. 984
  36. 4431
  37. 43.75
  38. 3816
  39. 25
  40. 12.5

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