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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 322 · 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 price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹3460 to ₹2595. By what percent did it come down?
  3. 3.The price of a bicycle is ₹4380. It goes up by 25%. What is the new price (in ₹)?
  4. 4.A town has 2820 people. Its population grows by 25%. How many people live there now?
  5. 5.The price of a school bag changes from ₹2100 to ₹3150. By what percent did it go up?
  6. 6.The price of a bicycle is ₹1560. It goes up by 5%. What is the new price (in ₹)?
  7. 7.A water tank holds 1840 litres. 10% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹4700 to ₹4935. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹980 to ₹1127. By what percent did it go up?
  10. 10.A water tank holds 4320 litres. 50% of the water is used. How many litres are left?
  11. 11.A shop sells 3320 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  12. 12.A town has 300 people. Its population grows by 40%. How many people live there now?
  13. 13.The price of a school bag changes from ₹3840 to ₹4800. By what percent did it go up?
  14. 14.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  15. 15.The price of a school bag changes from ₹3900 to ₹5460. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹1100 to ₹1430. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹4780 to ₹5019. By what percent did it go up?
  18. 18.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹3800. It goes up by 10%. What is the new price (in ₹)?
  20. 20.The price of a bicycle is ₹600. It goes up by 40%. What is the new price (in ₹)?
  21. 21.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  22. 22.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  23. 23.A town has 2500 people. Its population grows by 20%. How many people live there now?
  24. 24.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  25. 25.A water tank holds 300 litres. 40% of the water is used. How many litres are left?
  26. 26.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  27. 27.A town has 1940 people. Its population grows by 5%. How many people live there now?
  28. 28.A water tank holds 920 litres. 25% of the water is used. How many litres are left?
  29. 29.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹1760 to ₹1584. By what percent did it come down?
  31. 31.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  32. 32.A water tank holds 2540 litres. 40% of the water is used. How many litres are left?
  33. 33.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  34. 34.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹240 to ₹228. By what percent did it come down?
  36. 36.A water tank holds 2700 litres. 10% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹2520 to ₹2646. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹1460 to ₹1752. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹700 to ₹735. By what percent did it go up?
  40. 40.A shop sells 760 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

Answer key

  1. 52.5
  2. 25
  3. 5475
  4. 3525
  5. 50
  6. 1638
  7. 1656
  8. 5
  9. 15
  10. 2160
  11. 4648
  12. 420
  13. 25
  14. 72.5
  15. 40
  16. 30
  17. 5
  18. 28.75
  19. 4180
  20. 840
  21. 32
  22. 33.5
  23. 3000
  24. 57.5
  25. 180
  26. 68
  27. 2037
  28. 690
  29. 62.5
  30. 10
  31. 20.75
  32. 1524
  33. 23.5
  34. 75
  35. 5
  36. 2430
  37. 5
  38. 20
  39. 5
  40. 798

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