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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 893 · 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 ₹940 to ₹752. By what percent did it come down?
  2. 2.The price of a bicycle is ₹3960. It goes up by 25%. What is the new price (in ₹)?
  3. 3.The price of a bicycle is ₹4400. It goes up by 15%. What is the new price (in ₹)?
  4. 4.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  5. 5.The price of a school bag changes from ₹4480 to ₹5824. By what percent did it go up?
  6. 6.A town has 960 people. Its population grows by 25%. How many people live there now?
  7. 7.The price of a school bag changes from ₹1480 to ₹2220. By what percent did it go up?
  8. 8.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  9. 9.The price of a bicycle is ₹580. It goes up by 30%. What is the new price (in ₹)?
  10. 10.A water tank holds 2880 litres. 10% of the water is used. How many litres are left?
  11. 11.A water tank holds 4020 litres. 15% of the water is used. How many litres are left?
  12. 12.A town has 280 people. Its population grows by 40%. How many people live there now?
  13. 13.A shop sells 1360 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  14. 14.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  15. 15.The price of a bicycle is ₹960. It goes up by 15%. What is the new price (in ₹)?
  16. 16.The price of a bicycle is ₹800. It goes up by 15%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹4620 to ₹3465. By what percent did it come down?
  18. 18.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  19. 19.The price of a bicycle is ₹2640. It goes up by 15%. What is the new price (in ₹)?
  20. 20.A water tank holds 4500 litres. 15% of the water is used. How many litres are left?
  21. 21.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  22. 22.The price of a bicycle is ₹1680. It goes up by 10%. What is the new price (in ₹)?
  23. 23.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹2300 to ₹2990. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹2460 to ₹1722. By what percent did it come down?
  26. 26.A water tank holds 3100 litres. 20% of the water is used. How many litres are left?
  27. 27.A water tank holds 1180 litres. 20% of the water is used. How many litres are left?
  28. 28.A shop sells 1100 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  29. 29.A shop sells 2620 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  30. 30.A water tank holds 4060 litres. 10% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹600 to ₹660. By what percent did it go up?
  32. 32.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  33. 33.The price of a bicycle is ₹3000. It goes up by 20%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹2140. It goes up by 30%. What is the new price (in ₹)?
  35. 35.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 4340 litres. 40% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹4080 to ₹4692. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹4980 to ₹3735. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹3340 to ₹2338. By what percent did it come down?
  40. 40.A water tank holds 1180 litres. 5% of the water is used. How many litres are left?

Answer key

  1. 20
  2. 4950
  3. 5060
  4. 62.5
  5. 30
  6. 1200
  7. 50
  8. 12
  9. 754
  10. 2592
  11. 3417
  12. 392
  13. 1904
  14. 21
  15. 1104
  16. 920
  17. 25
  18. 20.75
  19. 3036
  20. 3825
  21. 54
  22. 1848
  23. 47.5
  24. 30
  25. 30
  26. 2480
  27. 944
  28. 1375
  29. 3013
  30. 3654
  31. 10
  32. 19.25
  33. 3600
  34. 2782
  35. 26.5
  36. 2604
  37. 15
  38. 25
  39. 30
  40. 1121

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