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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 304 · 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 15% and then comes down by 25% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹1140 to ₹969. By what percent did it come down?
  3. 3.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  4. 4.The price of a bicycle is ₹1120. It goes up by 15%. What is the new price (in ₹)?
  5. 5.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹2260 to ₹2373. By what percent did it go up?
  7. 7.The price of a school bag changes from ₹740 to ₹814. By what percent did it go up?
  8. 8.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.A water tank holds 1520 litres. 50% of the water is used. How many litres are left?
  10. 10.A water tank holds 3160 litres. 5% of the water is used. How many litres are left?
  11. 11.A shop sells 320 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  12. 12.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  13. 13.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 1680 litres. 50% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹2860 to ₹2717. By what percent did it come down?
  16. 16.A town has 1620 people. Its population grows by 20%. How many people live there now?
  17. 17.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹2220 to ₹1554. By what percent did it come down?
  19. 19.A shop sells 5000 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  20. 20.The price of a bicycle is ₹2520. It goes up by 50%. What is the new price (in ₹)?
  21. 21.A shop sells 2040 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  22. 22.A shop sells 4780 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 bicycle is ₹2860. It goes up by 30%. What is the new price (in ₹)?
  24. 24.A water tank holds 4060 litres. 50% of the water is used. How many litres are left?
  25. 25.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  26. 26.A town has 4540 people. Its population grows by 30%. How many people live there now?
  27. 27.A water tank holds 3340 litres. 20% of the water is used. How many litres are left?
  28. 28.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  30. 30.The price of a school bag changes from ₹2840 to ₹3976. By what percent did it go up?
  31. 31.A town has 3020 people. Its population grows by 50%. How many people live there now?
  32. 32.The price of a bicycle is ₹1020. It goes up by 10%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹260 to ₹286. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹4040 to ₹3636. By what percent did it come down?
  35. 35.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹3360. It goes up by 25%. What is the new price (in ₹)?
  37. 37.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  38. 38.A water tank holds 4300 litres. 25% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹3680 to ₹3312. By what percent did it come down?
  40. 40.A water tank holds 4700 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 36.25
  2. 15
  3. 49.5
  4. 1288
  5. 10.25
  6. 5
  7. 10
  8. 52
  9. 760
  10. 3002
  11. 480
  12. 23.5
  13. 65
  14. 840
  15. 5
  16. 1944
  17. 8
  18. 30
  19. 5500
  20. 3780
  21. 2346
  22. 5258
  23. 3718
  24. 2030
  25. 36.25
  26. 5902
  27. 2672
  28. 56
  29. 27.75
  30. 40
  31. 4530
  32. 1122
  33. 10
  34. 10
  35. 87.5
  36. 4200
  37. 46
  38. 3225
  39. 10
  40. 3760

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