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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 429 · 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 ₹3480 to ₹2088. By what percent did it come down?
  2. 2.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.The price of a school bag changes from ₹4840 to ₹3388. By what percent did it come down?
  4. 4.A town has 1100 people. Its population grows by 15%. How many people live there now?
  5. 5.The price of a school bag changes from ₹4700 to ₹6580. By what percent did it go up?
  6. 6.A water tank holds 1720 litres. 40% of the water is used. How many litres are left?
  7. 7.A shop sells 3880 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  8. 8.A shop sells 1640 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  9. 9.A water tank holds 2480 litres. 15% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹320 to ₹400. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹3800 to ₹4560. By what percent did it go up?
  12. 12.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 1320 litres. 20% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹720 to ₹648. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹1760 to ₹1672. By what percent did it come down?
  16. 16.The price of a bicycle is ₹1800. It goes up by 50%. What is the new price (in ₹)?
  17. 17.A water tank holds 3140 litres. 25% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹2760 to ₹3588. By what percent did it go up?
  19. 19.The price of a school bag changes from ₹4560 to ₹5472. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹2240 to ₹2688. By what percent did it go up?
  21. 21.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹1240 to ₹620. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹2120 to ₹2332. By what percent did it go up?
  24. 24.A shop sells 600 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹1480 to ₹1850. By what percent did it go up?
  26. 26.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹4160. It goes up by 40%. What is the new price (in ₹)?
  28. 28.The price of a bicycle is ₹4880. It goes up by 30%. What is the new price (in ₹)?
  29. 29.The price of a school bag changes from ₹1500 to ₹1125. By what percent did it come down?
  30. 30.The price of a bicycle is ₹2940. It goes up by 15%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹4800 to ₹5520. By what percent did it go up?
  32. 32.A town has 2680 people. Its population grows by 40%. How many people live there now?
  33. 33.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  34. 34.A shop sells 960 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹2000 to ₹1000. By what percent did it come down?
  36. 36.A water tank holds 260 litres. 40% of the water is used. How many litres are left?
  37. 37.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  38. 38.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  39. 39.A town has 2640 people. Its population grows by 50%. How many people live there now?
  40. 40.The price of a bicycle is ₹2180. It goes up by 10%. What is the new price (in ₹)?

Answer key

  1. 40
  2. 19
  3. 30
  4. 1265
  5. 40
  6. 1032
  7. 5044
  8. 2132
  9. 2108
  10. 25
  11. 20
  12. 110
  13. 1056
  14. 10
  15. 5
  16. 2700
  17. 2355
  18. 30
  19. 20
  20. 20
  21. 26
  22. 50
  23. 10
  24. 660
  25. 25
  26. 4.5
  27. 5824
  28. 6344
  29. 25
  30. 3381
  31. 15
  32. 3752
  33. 6.25
  34. 1344
  35. 50
  36. 156
  37. 55
  38. 14
  39. 3960
  40. 2398

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