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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 445 · 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 ₹2540. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A water tank holds 3260 litres. 10% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹1180 to ₹1357. By what percent did it go up?
  4. 4.The price of a bicycle is ₹820. It goes up by 10%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹3340 to ₹2672. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹3340 to ₹3173. By what percent did it come down?
  7. 7.A water tank holds 2160 litres. 10% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹2340 to ₹2808. By what percent did it go up?
  9. 9.A water tank holds 300 litres. 50% of the water is used. How many litres are left?
  10. 10.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.A town has 4820 people. Its population grows by 40%. How many people live there now?
  12. 12.A shop sells 680 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  13. 13.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  14. 14.A water tank holds 1840 litres. 30% of the water is used. How many litres are left?
  15. 15.A shop sells 1560 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  16. 16.A water tank holds 4340 litres. 40% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹1300. It goes up by 30%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹4680. It goes up by 20%. What is the new price (in ₹)?
  19. 19.A water tank holds 3860 litres. 30% of the water is used. How many litres are left?
  20. 20.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  21. 21.The price of a school bag changes from ₹1020 to ₹1224. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹1080 to ₹972. By what percent did it come down?
  23. 23.A town has 3440 people. Its population grows by 30%. How many people live there now?
  24. 24.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  25. 25.The price of a school bag changes from ₹1580 to ₹1817. By what percent did it go up?
  26. 26.A town has 4120 people. Its population grows by 50%. How many people live there now?
  27. 27.The price of a school bag changes from ₹3720 to ₹2790. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹340 to ₹289. By what percent did it come down?
  29. 29.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 3540 litres. 20% of the water is used. How many litres are left?
  31. 31.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹940 to ₹1175. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹2880 to ₹3168. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹120 to ₹72. By what percent did it come down?
  35. 35.A water tank holds 3540 litres. 40% of the water is used. How many litres are left?
  36. 36.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  37. 37.A town has 480 people. Its population grows by 15%. How many people live there now?
  38. 38.A town has 1860 people. Its population grows by 50%. How many people live there now?
  39. 39.The price of a school bag changes from ₹2440 to ₹2684. By what percent did it go up?
  40. 40.A water tank holds 1140 litres. 10% of the water is used. How many litres are left?

Answer key

  1. 2667
  2. 2934
  3. 15
  4. 902
  5. 20
  6. 5
  7. 1944
  8. 20
  9. 150
  10. 38
  11. 6748
  12. 1020
  13. 19
  14. 1288
  15. 1716
  16. 2604
  17. 1690
  18. 5616
  19. 2702
  20. 55
  21. 20
  22. 10
  23. 4472
  24. 36.25
  25. 15
  26. 6180
  27. 25
  28. 15
  29. 87.5
  30. 2832
  31. 52
  32. 25
  33. 10
  34. 40
  35. 2124
  36. 28
  37. 552
  38. 2790
  39. 10
  40. 1026

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