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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 353 · 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 ₹4240 to ₹5936. By what percent did it go up?
  2. 2.A shop sells 4300 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹620 to ₹744. By what percent did it go up?
  4. 4.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  5. 5.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹400. It goes up by 30%. What is the new price (in ₹)?
  7. 7.A water tank holds 4300 litres. 10% of the water is used. How many litres are left?
  8. 8.A water tank holds 2340 litres. 40% of the water is used. How many litres are left?
  9. 9.A water tank holds 4860 litres. 50% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹80. It goes up by 10%. What is the new price (in ₹)?
  11. 11.The price of a bicycle is ₹620. It goes up by 10%. What is the new price (in ₹)?
  12. 12.The price of a bicycle is ₹3580. It goes up by 50%. What is the new price (in ₹)?
  13. 13.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  14. 14.A water tank holds 4400 litres. 40% of the water is used. How many litres are left?
  15. 15.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  16. 16.A water tank holds 2020 litres. 20% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹1520. It goes up by 10%. What is the new price (in ₹)?
  18. 18.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹4740. It goes up by 10%. What is the new price (in ₹)?
  22. 22.A water tank holds 400 litres. 30% of the water is used. How many litres are left?
  23. 23.A water tank holds 1840 litres. 20% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹3400 to ₹3910. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹4480 to ₹5600. By what percent did it go up?
  26. 26.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹3700 to ₹3330. By what percent did it come down?
  28. 28.A shop sells 340 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  29. 29.The price of a bicycle is ₹320. It goes up by 25%. What is the new price (in ₹)?
  30. 30.A town has 1940 people. Its population grows by 30%. How many people live there now?
  31. 31.The price of a school bag changes from ₹4920 to ₹4674. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹1060 to ₹1484. By what percent did it go up?
  33. 33.A water tank holds 3780 litres. 40% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹1520 to ₹1672. By what percent did it go up?
  35. 35.A water tank holds 4400 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 600 litres. 10% of the water is used. How many litres are left?
  37. 37.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹4400 to ₹3960. By what percent did it come down?
  39. 39.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  40. 40.A town has 1020 people. Its population grows by 10%. How many people live there now?

Answer key

  1. 40
  2. 5590
  3. 20
  4. 20.75
  5. 95
  6. 520
  7. 3870
  8. 1404
  9. 2430
  10. 88
  11. 682
  12. 5370
  13. 9.25
  14. 2640
  15. 28
  16. 1616
  17. 1672
  18. 32.25
  19. 75
  20. 37.5
  21. 5214
  22. 280
  23. 1472
  24. 15
  25. 25
  26. 12.5
  27. 10
  28. 510
  29. 400
  30. 2522
  31. 5
  32. 40
  33. 2268
  34. 10
  35. 4180
  36. 540
  37. 31.25
  38. 10
  39. 52
  40. 1122

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