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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 749 · 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 ₹1520 to ₹1672. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹2660 to ₹2394. By what percent did it come down?
  3. 3.A water tank holds 2640 litres. 50% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹2680 to ₹1608. By what percent did it come down?
  5. 5.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  6. 6.The price of a bicycle is ₹1520. It goes up by 50%. What is the new price (in ₹)?
  7. 7.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  8. 8.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.A water tank holds 2300 litres. 20% of the water is used. How many litres are left?
  10. 10.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹1660 to ₹1577. By what percent did it come down?
  12. 12.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  13. 13.A town has 4720 people. Its population grows by 30%. How many people live there now?
  14. 14.The price of a school bag changes from ₹180 to ₹234. By what percent did it go up?
  15. 15.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  16. 16.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹4840 to ₹5324. By what percent did it go up?
  18. 18.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  19. 19.The price of a bicycle is ₹720. It goes up by 15%. What is the new price (in ₹)?
  20. 20.The price of a bicycle is ₹3580. It goes up by 30%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹2880 to ₹3456. By what percent did it go up?
  22. 22.A water tank holds 1960 litres. 20% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4040 to ₹5656. By what percent did it go up?
  24. 24.A water tank holds 1760 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹2640. It goes up by 30%. What is the new price (in ₹)?
  26. 26.A town has 1580 people. Its population grows by 10%. How many people live there now?
  27. 27.The price of a bicycle is ₹5000. It goes up by 5%. What is the new price (in ₹)?
  28. 28.A water tank holds 1900 litres. 5% of the water is used. How many litres are left?
  29. 29.A shop sells 1220 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  30. 30.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  31. 31.A water tank holds 1780 litres. 50% of the water is used. How many litres are left?
  32. 32.A water tank holds 4960 litres. 20% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹480. It goes up by 25%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹400. It goes up by 20%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹3180 to ₹1908. By what percent did it come down?
  36. 36.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  37. 37.A water tank holds 1660 litres. 10% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹60 to ₹78. By what percent did it go up?
  39. 39.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.A shop sells 1400 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?

Answer key

  1. 10
  2. 10
  3. 1320
  4. 40
  5. 46
  6. 2280
  7. 23.5
  8. 32
  9. 1840
  10. 10.25
  11. 5
  12. 12
  13. 6136
  14. 30
  15. 14.5
  16. 42.5
  17. 10
  18. 56.25
  19. 828
  20. 4654
  21. 20
  22. 1568
  23. 40
  24. 1056
  25. 3432
  26. 1738
  27. 5250
  28. 1805
  29. 1403
  30. 52
  31. 890
  32. 3968
  33. 600
  34. 480
  35. 40
  36. 27.75
  37. 1494
  38. 30
  39. 32.5
  40. 1960

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