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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 339 · 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 bicycle is ₹2500. It goes up by 30%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹4140 to ₹5175. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹480 to ₹360. By what percent did it come down?
  4. 4.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  5. 5.A water tank holds 2900 litres. 15% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹1760. It goes up by 50%. What is the new price (in ₹)?
  7. 7.The price of a bicycle is ₹4040. It goes up by 25%. What is the new price (in ₹)?
  8. 8.A water tank holds 4940 litres. 40% of the water is used. How many litres are left?
  9. 9.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  10. 10.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  11. 11.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹220 to ₹308. By what percent did it go up?
  13. 13.A town has 4180 people. Its population grows by 10%. How many people live there now?
  14. 14.A water tank holds 1460 litres. 30% of the water is used. How many litres are left?
  15. 15.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.A water tank holds 880 litres. 25% of the water is used. How many litres are left?
  17. 17.A water tank holds 940 litres. 10% of the water is used. How many litres are left?
  18. 18.A shop sells 100 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  19. 19.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  21. 21.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  22. 22.A shop sells 1580 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹2560 to ₹3840. By what percent did it go up?
  24. 24.A water tank holds 880 litres. 50% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹780. It goes up by 15%. What is the new price (in ₹)?
  26. 26.A town has 680 people. Its population grows by 30%. How many people live there now?
  27. 27.A shop sells 3780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹820 to ₹656. By what percent did it come down?
  29. 29.A town has 4980 people. Its population grows by 40%. How many people live there now?
  30. 30.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹100 to ₹95. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹180 to ₹126. By what percent did it come down?
  33. 33.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  34. 34.The price of a bicycle is ₹4640. It goes up by 30%. What is the new price (in ₹)?
  35. 35.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  36. 36.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  37. 37.A water tank holds 4320 litres. 25% of the water is used. How many litres are left?
  38. 38.A town has 3900 people. Its population grows by 40%. How many people live there now?
  39. 39.A shop sells 3980 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  40. 40.A town has 220 people. Its population grows by 20%. How many people live there now?

Answer key

  1. 3250
  2. 25
  3. 25
  4. 28
  5. 2465
  6. 2640
  7. 5050
  8. 2964
  9. 38
  10. 4
  11. 62.5
  12. 40
  13. 4598
  14. 1022
  15. 60
  16. 660
  17. 846
  18. 150
  19. 37.5
  20. 47.5
  21. 14
  22. 1738
  23. 50
  24. 440
  25. 897
  26. 884
  27. 3969
  28. 20
  29. 6972
  30. 36.5
  31. 5
  32. 30
  33. 4.5
  34. 6032
  35. 44
  36. 23.5
  37. 3240
  38. 5460
  39. 4179
  40. 264

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