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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 288 · 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 water tank holds 3540 litres. 20% of the water is used. How many litres are left?
  2. 2.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  3. 3.The price of a bicycle is ₹2860. It goes up by 25%. What is the new price (in ₹)?
  4. 4.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  5. 5.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 760 litres. 10% of the water is used. How many litres are left?
  7. 7.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹1820 to ₹2730. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹4880 to ₹6344. By what percent did it go up?
  10. 10.The price of a school bag changes from ₹1920 to ₹2112. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹1060 to ₹1007. By what percent did it come down?
  12. 12.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹840 to ₹966. By what percent did it go up?
  14. 14.A water tank holds 4360 litres. 15% of the water is used. How many litres are left?
  15. 15.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.The price of a school bag changes from ₹720 to ₹648. By what percent did it come down?
  17. 17.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹2320 to ₹2784. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹4300 to ₹4945. By what percent did it go up?
  20. 20.A water tank holds 2420 litres. 30% of the water is used. How many litres are left?
  21. 21.A shop sells 760 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹3380. It goes up by 30%. What is the new price (in ₹)?
  23. 23.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹240 to ₹300. By what percent did it go up?
  25. 25.A shop sells 2620 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  26. 26.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  27. 27.A shop sells 80 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.A town has 1060 people. Its population grows by 20%. How many people live there now?
  29. 29.The price of a school bag changes from ₹800 to ₹960. By what percent did it go up?
  30. 30.A water tank holds 3800 litres. 20% of the water is used. How many litres are left?
  31. 31.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  32. 32.A town has 1060 people. Its population grows by 40%. How many people live there now?
  33. 33.The price of a bicycle is ₹2520. It goes up by 30%. What is the new price (in ₹)?
  34. 34.A town has 100 people. Its population grows by 5%. How many people live there now?
  35. 35.A water tank holds 3040 litres. 30% of the water is used. How many litres are left?
  36. 36.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹540 to ₹486. By what percent did it come down?
  38. 38.A water tank holds 4860 litres. 40% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹1420 to ₹1491. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹3200 to ₹4480. By what percent did it go up?

Answer key

  1. 2832
  2. 56.25
  3. 3575
  4. 14.5
  5. 95
  6. 684
  7. 40.5
  8. 50
  9. 30
  10. 10
  11. 5
  12. 43.75
  13. 15
  14. 3706
  15. 52.5
  16. 10
  17. 72.5
  18. 20
  19. 15
  20. 1694
  21. 874
  22. 4394
  23. 55
  24. 25
  25. 3013
  26. 37.5
  27. 88
  28. 1272
  29. 20
  30. 3040
  31. 28.75
  32. 1484
  33. 3276
  34. 105
  35. 2128
  36. 3.5
  37. 10
  38. 2916
  39. 5
  40. 40

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