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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 274 · 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 ₹380 to ₹494. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹1220 to ₹854. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹3060 to ₹3519. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹400 to ₹480. By what percent did it go up?
  5. 5.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  6. 6.A shop sells 2900 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹2840 to ₹3692. By what percent did it go up?
  8. 8.The price of a bicycle is ₹2340. It goes up by 5%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹760 to ₹836. By what percent did it go up?
  10. 10.A town has 2800 people. Its population grows by 20%. How many people live there now?
  11. 11.A shop sells 4060 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  12. 12.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹2460 to ₹3690. By what percent did it go up?
  14. 14.The price of a bicycle is ₹2800. It goes up by 20%. What is the new price (in ₹)?
  15. 15.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  16. 16.A water tank holds 780 litres. 50% of the water is used. How many litres are left?
  17. 17.A shop sells 4260 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  18. 18.The price of a school bag changes from ₹1400 to ₹1750. By what percent did it go up?
  19. 19.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  20. 20.The price of a bicycle is ₹260. It goes up by 50%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹4620 to ₹4389. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹1320 to ₹1056. By what percent did it come down?
  23. 23.A town has 2480 people. Its population grows by 15%. How many people live there now?
  24. 24.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  25. 25.A town has 3860 people. Its population grows by 15%. How many people live there now?
  26. 26.The price of a bicycle is ₹360. It goes up by 30%. What is the new price (in ₹)?
  27. 27.The price of a bicycle is ₹60. It goes up by 40%. What is the new price (in ₹)?
  28. 28.A town has 4400 people. Its population grows by 15%. How many people live there now?
  29. 29.The price of a school bag changes from ₹4340 to ₹3472. By what percent did it come down?
  30. 30.The price of a bicycle is ₹440. It goes up by 25%. What is the new price (in ₹)?
  31. 31.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  33. 33.The price of a bicycle is ₹1020. It goes up by 10%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹2400 to ₹1440. By what percent did it come down?
  35. 35.The price of a bicycle is ₹720. It goes up by 20%. What is the new price (in ₹)?
  36. 36.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹2020 to ₹1414. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹160 to ₹184. By what percent did it go up?
  39. 39.The price of a bicycle is ₹780. It goes up by 5%. What is the new price (in ₹)?
  40. 40.The price of a school bag changes from ₹2460 to ₹1968. By what percent did it come down?

Answer key

  1. 30
  2. 30
  3. 15
  4. 20
  5. 33.5
  6. 3190
  7. 30
  8. 2457
  9. 10
  10. 3360
  11. 5075
  12. 10.5
  13. 50
  14. 3360
  15. 54
  16. 390
  17. 5964
  18. 25
  19. 21
  20. 390
  21. 5
  22. 20
  23. 2852
  24. 62.5
  25. 4439
  26. 468
  27. 84
  28. 5060
  29. 20
  30. 550
  31. 19
  32. 46
  33. 1122
  34. 40
  35. 864
  36. 456
  37. 30
  38. 15
  39. 819
  40. 20

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