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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 15 · 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 ₹2420. It goes up by 15%. What is the new price (in ₹)?
  2. 2.A shop sells 3700 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  3. 3.A water tank holds 60 litres. 15% of the water is used. How many litres are left?
  4. 4.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  5. 5.The price of a bicycle is ₹480. It goes up by 15%. What is the new price (in ₹)?
  6. 6.A water tank holds 600 litres. 20% of the water is used. How many litres are left?
  7. 7.The price of a bicycle is ₹120. It goes up by 20%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹2880 to ₹2592. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹1720 to ₹1978. By what percent did it go up?
  10. 10.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  11. 11.The price of a bicycle is ₹4860. It goes up by 10%. What is the new price (in ₹)?
  12. 12.A shop sells 480 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  13. 13.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹2240 to ₹2352. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹320 to ₹336. By what percent did it go up?
  16. 16.A water tank holds 120 litres. 5% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹1380. It goes up by 5%. What is the new price (in ₹)?
  18. 18.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 4680 litres. 10% of the water is used. How many litres are left?
  20. 20.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  22. 22.The price of a bicycle is ₹4040. It goes up by 20%. What is the new price (in ₹)?
  23. 23.A shop sells 4920 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  24. 24.A water tank holds 3460 litres. 40% of the water is used. How many litres are left?
  25. 25.A water tank holds 900 litres. 10% of the water is used. How many litres are left?
  26. 26.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  27. 27.A town has 3040 people. Its population grows by 40%. How many people live there now?
  28. 28.A water tank holds 1500 litres. 30% of the water is used. How many litres are left?
  29. 29.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.A shop sells 460 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  31. 31.A shop sells 4880 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  32. 32.The price of a school bag changes from ₹4700 to ₹5170. By what percent did it go up?
  33. 33.The price of a bicycle is ₹3960. It goes up by 15%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹640 to ₹832. By what percent did it go up?
  35. 35.A town has 800 people. Its population grows by 10%. How many people live there now?
  36. 36.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  37. 37.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹1420 to ₹1562. By what percent did it go up?
  39. 39.A water tank holds 1200 litres. 5% of the water is used. How many litres are left?
  40. 40.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =

Answer key

  1. 2783
  2. 3885
  3. 51
  4. 31.25
  5. 552
  6. 480
  7. 144
  8. 10
  9. 15
  10. 55
  11. 5346
  12. 504
  13. 5
  14. 5
  15. 5
  16. 114
  17. 1449
  18. 32
  19. 4212
  20. 96
  21. 28.75
  22. 4848
  23. 6150
  24. 2076
  25. 810
  26. 52
  27. 4256
  28. 1050
  29. 38
  30. 506
  31. 5368
  32. 10
  33. 4554
  34. 30
  35. 880
  36. 32.25
  37. 50
  38. 10
  39. 1140
  40. 28

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