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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 24 · 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 price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.A town has 2300 people. Its population grows by 5%. How many people live there now?
  3. 3.A water tank holds 1720 litres. 10% of the water is used. How many litres are left?
  4. 4.The price of a bicycle is ₹2740. It goes up by 30%. What is the new price (in ₹)?
  5. 5.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹2120. It goes up by 25%. What is the new price (in ₹)?
  7. 7.The price of a bicycle is ₹1080. It goes up by 20%. What is the new price (in ₹)?
  8. 8.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  9. 9.The price of a bicycle is ₹4340. It goes up by 10%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹4160 to ₹3952. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹2480 to ₹1860. By what percent did it come down?
  12. 12.A water tank holds 1400 litres. 15% of the water is used. How many litres are left?
  13. 13.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹1360 to ₹952. By what percent did it come down?
  15. 15.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  16. 16.The price of a school bag changes from ₹2340 to ₹3510. By what percent did it go up?
  17. 17.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  18. 18.A water tank holds 3820 litres. 30% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹2880. It goes up by 30%. What is the new price (in ₹)?
  20. 20.A water tank holds 1140 litres. 40% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹2380 to ₹2737. By what percent did it go up?
  22. 22.A water tank holds 4540 litres. 25% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹1080 to ₹1026. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹2540 to ₹2667. By what percent did it go up?
  25. 25.A town has 1240 people. Its population grows by 30%. How many people live there now?
  26. 26.The price of a school bag changes from ₹3280 to ₹4920. By what percent did it go up?
  27. 27.A shop sells 4760 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  28. 28.A water tank holds 460 litres. 15% of the water is used. How many litres are left?
  29. 29.A shop sells 1440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.The price of a bicycle is ₹3500. It goes up by 20%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹2920 to ₹3066. By what percent did it go up?
  32. 32.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  33. 33.A shop sells 1220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  34. 34.The price of a bicycle is ₹2060. It goes up by 25%. What is the new price (in ₹)?
  35. 35.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 60 litres. 5% of the water is used. How many litres are left?
  37. 37.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹2220 to ₹1887. By what percent did it come down?
  39. 39.A town has 460 people. Its population grows by 25%. How many people live there now?
  40. 40.The price of a school bag changes from ₹2660 to ₹1995. By what percent did it come down?

Answer key

  1. 52.5
  2. 2415
  3. 1548
  4. 3562
  5. 36.5
  6. 2650
  7. 1296
  8. 60
  9. 4774
  10. 5
  11. 25
  12. 1190
  13. 95
  14. 30
  15. 19.25
  16. 50
  17. 19
  18. 2674
  19. 3744
  20. 684
  21. 15
  22. 3405
  23. 5
  24. 5
  25. 1612
  26. 50
  27. 5712
  28. 391
  29. 1512
  30. 4200
  31. 5
  32. 33
  33. 1342
  34. 2575
  35. 43
  36. 57
  37. 32
  38. 15
  39. 575
  40. 25

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