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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 204 · 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 ₹4700 to ₹5875. By what percent did it go up?
  2. 2.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.The price of a bicycle is ₹1980. It goes up by 5%. What is the new price (in ₹)?
  4. 4.A shop sells 4760 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  5. 5.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 2380 litres. 15% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹4200. It goes up by 20%. What is the new price (in ₹)?
  9. 9.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  10. 10.A water tank holds 4100 litres. 40% of the water is used. How many litres are left?
  11. 11.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  12. 12.The price of a bicycle is ₹300. It goes up by 15%. What is the new price (in ₹)?
  13. 13.The price of a bicycle is ₹2180. It goes up by 10%. What is the new price (in ₹)?
  14. 14.The price of a bicycle is ₹1860. It goes up by 30%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹4300 to ₹5590. By what percent did it go up?
  16. 16.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹5000 to ₹5750. By what percent did it go up?
  18. 18.A shop sells 4300 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  19. 19.A water tank holds 3120 litres. 30% of the water is used. How many litres are left?
  20. 20.A water tank holds 380 litres. 15% of the water is used. How many litres are left?
  21. 21.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 1720 litres. 15% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹2320 to ₹2436. By what percent did it go up?
  24. 24.The price of a school bag changes from ₹2680 to ₹1608. By what percent did it come down?
  25. 25.The price of a bicycle is ₹240. It goes up by 25%. What is the new price (in ₹)?
  26. 26.A shop sells 3860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  27. 27.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  28. 28.The price of a school bag changes from ₹3360 to ₹4704. By what percent did it go up?
  29. 29.A shop sells 2040 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  30. 30.A water tank holds 1440 litres. 50% of the water is used. How many litres are left?
  31. 31.A water tank holds 3020 litres. 10% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹4820 to ₹5543. By what percent did it go up?
  33. 33.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  34. 34.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  35. 35.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 2980 litres. 50% of the water is used. How many litres are left?
  37. 37.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  38. 38.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  39. 39.A water tank holds 4800 litres. 15% of the water is used. How many litres are left?
  40. 40.A water tank holds 380 litres. 10% of the water is used. How many litres are left?

Answer key

  1. 25
  2. 43.75
  3. 2079
  4. 5950
  5. 15.5
  6. 26.5
  7. 2023
  8. 5040
  9. 57.5
  10. 2460
  11. 43
  12. 345
  13. 2398
  14. 2418
  15. 30
  16. 36.25
  17. 15
  18. 4515
  19. 2184
  20. 323
  21. 38
  22. 1462
  23. 5
  24. 40
  25. 300
  26. 5018
  27. 58
  28. 40
  29. 2550
  30. 720
  31. 2718
  32. 15
  33. 33
  34. 32.25
  35. 80
  36. 1490
  37. 56.25
  38. 9.75
  39. 4080
  40. 342

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