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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 30 · 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 town has 1980 people. Its population grows by 30%. How many people live there now?
  2. 2.The price of a bicycle is ₹1300. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  4. 4.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  5. 5.A shop sells 4380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  6. 6.A town has 1000 people. Its population grows by 50%. How many people live there now?
  7. 7.The price of a bicycle is ₹1280. It goes up by 25%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹1820. It goes up by 40%. What is the new price (in ₹)?
  9. 9.A water tank holds 3940 litres. 10% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹360 to ₹270. By what percent did it come down?
  11. 11.A water tank holds 4840 litres. 15% of the water is used. How many litres are left?
  12. 12.A water tank holds 3700 litres. 10% of the water is used. How many litres are left?
  13. 13.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  14. 14.A shop sells 1940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  15. 15.The price of a bicycle is ₹2800. It goes up by 25%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹2500 to ₹2250. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹2080 to ₹3120. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹4140 to ₹4761. By what percent did it go up?
  19. 19.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  21. 21.A shop sells 2920 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  22. 22.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  23. 23.The price of a bicycle is ₹4540. It goes up by 20%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹3620 to ₹2534. By what percent did it come down?
  25. 25.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹4840. It goes up by 25%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹2140 to ₹1926. By what percent did it come down?
  28. 28.A shop sells 3060 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹4500 to ₹5850. By what percent did it go up?
  30. 30.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  31. 31.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹1300. It goes up by 10%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹1800 to ₹1620. By what percent did it come down?
  34. 34.The price of a bicycle is ₹1580. It goes up by 25%. What is the new price (in ₹)?
  35. 35.A town has 1120 people. Its population grows by 50%. How many people live there now?
  36. 36.The price of a bicycle is ₹4420. It goes up by 40%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹180 to ₹171. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹5000 to ₹7000. By what percent did it go up?
  39. 39.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  40. 40.A town has 2820 people. Its population grows by 5%. How many people live there now?

Answer key

  1. 2574
  2. 1950
  3. 37
  4. 64
  5. 6570
  6. 1500
  7. 1600
  8. 2548
  9. 3546
  10. 25
  11. 4114
  12. 3330
  13. 72.5
  14. 2231
  15. 3500
  16. 10
  17. 50
  18. 15
  19. 57.5
  20. 20.75
  21. 3066
  22. 23.5
  23. 5448
  24. 30
  25. 47
  26. 6050
  27. 10
  28. 3366
  29. 30
  30. 36.25
  31. 3.5
  32. 1430
  33. 10
  34. 1975
  35. 1680
  36. 6188
  37. 5
  38. 40
  39. 62.5
  40. 2961

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