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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 477 · 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 25% and then comes down by 25% more. By what percent has it come down in all? =
  2. 2.A town has 3160 people. Its population grows by 5%. How many people live there now?
  3. 3.The price of a school bag changes from ₹4580 to ₹4351. By what percent did it come down?
  4. 4.A water tank holds 800 litres. 25% of the water is used. How many litres are left?
  5. 5.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  7. 7.The price of a bicycle is ₹660. It goes up by 30%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹1320 to ₹660. By what percent did it come down?
  9. 9.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A shop sells 2660 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  11. 11.The price of a bicycle is ₹220. It goes up by 5%. What is the new price (in ₹)?
  12. 12.A water tank holds 1640 litres. 30% of the water is used. How many litres are left?
  13. 13.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  14. 14.The price of a bicycle is ₹180. It goes up by 25%. What is the new price (in ₹)?
  15. 15.A water tank holds 1900 litres. 25% of the water is used. How many litres are left?
  16. 16.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  17. 17.A water tank holds 1420 litres. 10% of the water is used. How many litres are left?
  18. 18.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹2160. It goes up by 5%. What is the new price (in ₹)?
  20. 20.A water tank holds 2960 litres. 20% of the water is used. How many litres are left?
  21. 21.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  22. 22.A shop sells 1920 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  23. 23.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  24. 24.A shop sells 60 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  25. 25.The price of a school bag changes from ₹1760 to ₹1584. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹780 to ₹468. By what percent did it come down?
  27. 27.A water tank holds 440 litres. 50% of the water is used. How many litres are left?
  28. 28.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  29. 29.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  30. 30.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  31. 31.A water tank holds 560 litres. 50% of the water is used. How many litres are left?
  32. 32.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  33. 33.A water tank holds 2140 litres. 20% of the water is used. How many litres are left?
  34. 34.A shop sells 360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  35. 35.The price of a school bag changes from ₹400 to ₹280. By what percent did it come down?
  36. 36.A shop sells 1160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  37. 37.A shop sells 2140 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  38. 38.A water tank holds 480 litres. 50% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹1960 to ₹2352. By what percent did it go up?
  40. 40.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =

Answer key

  1. 43.75
  2. 3318
  3. 5
  4. 600
  5. 75
  6. 95
  7. 858
  8. 50
  9. 43.75
  10. 3458
  11. 231
  12. 1148
  13. 24
  14. 225
  15. 1425
  16. 50
  17. 1278
  18. 23.5
  19. 2268
  20. 2368
  21. 56.25
  22. 2208
  23. 49
  24. 90
  25. 10
  26. 40
  27. 220
  28. 21
  29. 31.25
  30. 26
  31. 280
  32. 28.75
  33. 1712
  34. 396
  35. 30
  36. 1218
  37. 3210
  38. 240
  39. 20
  40. 28.75

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