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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 200 · 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 bicycle is ₹4820. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹1220. It goes up by 30%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹4360 to ₹3052. By what percent did it come down?
  4. 4.A town has 4680 people. Its population grows by 10%. How many people live there now?
  5. 5.The price of a bicycle is ₹4820. It goes up by 10%. What is the new price (in ₹)?
  6. 6.A water tank holds 4260 litres. 40% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹700 to ₹525. By what percent did it come down?
  8. 8.A town has 1760 people. Its population grows by 40%. How many people live there now?
  9. 9.A water tank holds 1760 litres. 20% of the water is used. How many litres are left?
  10. 10.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  11. 11.A water tank holds 1180 litres. 15% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹3720. It goes up by 25%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹4300 to ₹4085. By what percent did it come down?
  14. 14.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹3460 to ₹4844. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹720 to ₹792. By what percent did it go up?
  17. 17.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  18. 18.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  19. 19.A water tank holds 4600 litres. 20% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹400 to ₹460. By what percent did it go up?
  21. 21.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  22. 22.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  23. 23.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  24. 24.A town has 1140 people. Its population grows by 15%. How many people live there now?
  25. 25.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  26. 26.A water tank holds 1260 litres. 40% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹960 to ₹1056. By what percent did it go up?
  28. 28.A shop sells 3360 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  29. 29.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  30. 30.A shop sells 4920 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  31. 31.The price of a bicycle is ₹160. It goes up by 50%. What is the new price (in ₹)?
  32. 32.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  33. 33.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  34. 34.The price of a bicycle is ₹3720. It goes up by 15%. What is the new price (in ₹)?
  35. 35.A town has 3620 people. Its population grows by 40%. How many people live there now?
  36. 36.The price of a school bag changes from ₹3780 to ₹1890. By what percent did it come down?
  37. 37.A town has 140 people. Its population grows by 50%. How many people live there now?
  38. 38.A shop sells 1900 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  39. 39.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  40. 40.A water tank holds 1300 litres. 50% of the water is used. How many litres are left?

Answer key

  1. 7230
  2. 1586
  3. 30
  4. 5148
  5. 5302
  6. 2556
  7. 25
  8. 2464
  9. 1408
  10. 62.5
  11. 1003
  12. 4650
  13. 5
  14. 4
  15. 40
  16. 10
  17. 6.25
  18. 12.5
  19. 3680
  20. 15
  21. 87.5
  22. 87.5
  23. 57.5
  24. 1311
  25. 55
  26. 756
  27. 10
  28. 4368
  29. 42.5
  30. 5412
  31. 240
  32. 32.5
  33. 17
  34. 4278
  35. 5068
  36. 50
  37. 210
  38. 2375
  39. 49.5
  40. 650

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