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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 233 · 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 ₹220 to ₹275. By what percent did it go up?
  2. 2.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  3. 3.A water tank holds 2700 litres. 30% of the water is used. How many litres are left?
  4. 4.A town has 2120 people. Its population grows by 20%. How many people live there now?
  5. 5.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 4160 litres. 20% of the water is used. How many litres are left?
  7. 7.A shop sells 740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  8. 8.A shop sells 1600 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  9. 9.A water tank holds 2560 litres. 5% of the water is used. How many litres are left?
  10. 10.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  11. 11.The price of a bicycle is ₹660. It goes up by 15%. What is the new price (in ₹)?
  12. 12.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹640. It goes up by 25%. What is the new price (in ₹)?
  14. 14.A water tank holds 2000 litres. 40% of the water is used. How many litres are left?
  15. 15.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹4760 to ₹5474. By what percent did it go up?
  17. 17.A water tank holds 3920 litres. 20% of the water is used. How many litres are left?
  18. 18.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  19. 19.A town has 1560 people. Its population grows by 15%. How many people live there now?
  20. 20.A water tank holds 480 litres. 20% of the water is used. How many litres are left?
  21. 21.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  22. 22.The price of a school bag changes from ₹4360 to ₹2616. By what percent did it come down?
  23. 23.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  24. 24.A water tank holds 2820 litres. 5% of the water is used. How many litres are left?
  25. 25.A water tank holds 4520 litres. 10% of the water is used. How many litres are left?
  26. 26.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  27. 27.A water tank holds 1380 litres. 50% of the water is used. How many litres are left?
  28. 28.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  30. 30.The price of a bicycle is ₹3860. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A water tank holds 2040 litres. 5% of the water is used. How many litres are left?
  32. 32.A shop sells 1580 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹280 to ₹252. By what percent did it come down?
  34. 34.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  35. 35.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  36. 36.The price of a bicycle is ₹60. It goes up by 40%. What is the new price (in ₹)?
  37. 37.The price of a bicycle is ₹1720. It goes up by 20%. What is the new price (in ₹)?
  38. 38.A town has 160 people. Its population grows by 25%. How many people live there now?
  39. 39.The price of a school bag changes from ₹3360 to ₹2688. By what percent did it come down?
  40. 40.A water tank holds 3680 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 25
  2. 20.75
  3. 1890
  4. 2544
  5. 50
  6. 3328
  7. 925
  8. 2080
  9. 2432
  10. 37.5
  11. 759
  12. 9.25
  13. 800
  14. 1200
  15. 75
  16. 15
  17. 3136
  18. 52.5
  19. 1794
  20. 384
  21. 65
  22. 40
  23. 37.5
  24. 2679
  25. 4068
  26. 19.25
  27. 690
  28. 43.75
  29. 33.5
  30. 4053
  31. 1938
  32. 2054
  33. 10
  34. 65
  35. 40.5
  36. 84
  37. 2064
  38. 200
  39. 20
  40. 2208

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