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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 466 · 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 ₹2660. It goes up by 40%. What is the new price (in ₹)?
  2. 2.A water tank holds 220 litres. 20% of the water is used. How many litres are left?
  3. 3.A water tank holds 860 litres. 5% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹920 to ₹1380. By what percent did it go up?
  5. 5.The price of a bicycle is ₹3740. It goes up by 5%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹2860 to ₹3575. By what percent did it go up?
  7. 7.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹880 to ₹836. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹760 to ₹912. By what percent did it go up?
  10. 10.The price of a bicycle is ₹4080. It goes up by 30%. What is the new price (in ₹)?
  11. 11.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  12. 12.A water tank holds 1620 litres. 50% of the water is used. How many litres are left?
  13. 13.A town has 1220 people. Its population grows by 40%. How many people live there now?
  14. 14.The price of a school bag changes from ₹3820 to ₹4011. By what percent did it go up?
  15. 15.A town has 440 people. Its population grows by 40%. How many people live there now?
  16. 16.The price of a bicycle is ₹1680. It goes up by 10%. What is the new price (in ₹)?
  17. 17.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  18. 18.A water tank holds 1140 litres. 25% of the water is used. How many litres are left?
  19. 19.A town has 1520 people. Its population grows by 5%. How many people live there now?
  20. 20.The price of a school bag changes from ₹580 to ₹812. By what percent did it go up?
  21. 21.A shop sells 5000 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  22. 22.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  23. 23.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  24. 24.A town has 3760 people. Its population grows by 30%. How many people live there now?
  25. 25.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 2180 litres. 20% of the water is used. How many litres are left?
  27. 27.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  28. 28.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  30. 30.A water tank holds 3180 litres. 10% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹480. It goes up by 50%. What is the new price (in ₹)?
  32. 32.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.A water tank holds 4780 litres. 5% of the water is used. How many litres are left?
  34. 34.A town has 2720 people. Its population grows by 40%. How many people live there now?
  35. 35.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹2960 to ₹2516. By what percent did it come down?
  37. 37.A water tank holds 4460 litres. 50% of the water is used. How many litres are left?
  38. 38.A water tank holds 4880 litres. 15% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹1340. It goes up by 15%. What is the new price (in ₹)?
  40. 40.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =

Answer key

  1. 3724
  2. 176
  3. 817
  4. 50
  5. 3927
  6. 25
  7. 37.5
  8. 5
  9. 20
  10. 5304
  11. 60
  12. 810
  13. 1708
  14. 5
  15. 616
  16. 1848
  17. 19.25
  18. 855
  19. 1596
  20. 40
  21. 5500
  22. 43.75
  23. 55
  24. 4888
  25. 44
  26. 1744
  27. 32
  28. 38
  29. 28
  30. 2862
  31. 720
  32. 65
  33. 4541
  34. 3808
  35. 12
  36. 15
  37. 2230
  38. 4148
  39. 1541
  40. 68

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