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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 707 · 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 ₹1140 to ₹1083. By what percent did it come down?
  2. 2.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  3. 3.A water tank holds 4580 litres. 20% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹2040 to ₹3060. By what percent did it go up?
  5. 5.The price of a bicycle is ₹2500. It goes up by 40%. What is the new price (in ₹)?
  6. 6.A town has 720 people. Its population grows by 50%. How many people live there now?
  7. 7.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  8. 8.A water tank holds 580 litres. 40% of the water is used. How many litres are left?
  9. 9.The price of a bicycle is ₹3120. It goes up by 10%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹580 to ₹348. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹980 to ₹1078. By what percent did it go up?
  12. 12.A water tank holds 4800 litres. 5% of the water is used. How many litres are left?
  13. 13.A water tank holds 700 litres. 50% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹960 to ₹816. By what percent did it come down?
  15. 15.The price of a bicycle is ₹2500. It goes up by 20%. What is the new price (in ₹)?
  16. 16.The price of a bicycle is ₹2940. It goes up by 25%. What is the new price (in ₹)?
  17. 17.A water tank holds 980 litres. 20% of the water is used. How many litres are left?
  18. 18.A shop sells 520 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  19. 19.The price of a school bag changes from ₹500 to ₹650. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹900 to ₹810. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹3940 to ₹2758. By what percent did it come down?
  22. 22.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  23. 23.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  24. 24.A town has 1280 people. Its population grows by 15%. How many people live there now?
  25. 25.The price of a school bag changes from ₹4860 to ₹3645. By what percent did it come down?
  26. 26.The price of a bicycle is ₹4860. It goes up by 25%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹3080 to ₹2464. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹1200 to ₹1680. By what percent did it go up?
  29. 29.The price of a bicycle is ₹520. It goes up by 50%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹4800. It goes up by 5%. What is the new price (in ₹)?
  31. 31.The price of a school bag changes from ₹3020 to ₹2869. By what percent did it come down?
  32. 32.The price of a bicycle is ₹480. It goes up by 5%. What is the new price (in ₹)?
  33. 33.A town has 1100 people. Its population grows by 20%. How many people live there now?
  34. 34.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.The price of a school bag changes from ₹3200 to ₹4480. By what percent did it go up?
  36. 36.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  37. 37.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹4680. It goes up by 25%. What is the new price (in ₹)?
  39. 39.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  40. 40.The price of a school bag changes from ₹3620 to ₹5430. By what percent did it go up?

Answer key

  1. 5
  2. 27.5
  3. 3664
  4. 50
  5. 3500
  6. 1080
  7. 43.75
  8. 348
  9. 3432
  10. 40
  11. 10
  12. 4560
  13. 350
  14. 15
  15. 3000
  16. 3675
  17. 784
  18. 546
  19. 30
  20. 10
  21. 30
  22. 57.5
  23. 60
  24. 1472
  25. 25
  26. 6075
  27. 20
  28. 40
  29. 780
  30. 5040
  31. 5
  32. 504
  33. 1320
  34. 37
  35. 40
  36. 56.25
  37. 23.5
  38. 5850
  39. 68
  40. 50

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