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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 196 · 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 ₹3540 to ₹4956. By what percent did it go up?
  2. 2.A water tank holds 2080 litres. 40% of the water is used. How many litres are left?
  3. 3.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  4. 4.A shop sells 220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.The price of a bicycle is ₹3460. It goes up by 10%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹1500 to ₹1200. By what percent did it come down?
  7. 7.A shop sells 1280 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.The price of a bicycle is ₹1520. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 1420 litres. 15% of the water is used. How many litres are left?
  11. 11.The price of a bicycle is ₹4040. It goes up by 30%. What is the new price (in ₹)?
  12. 12.A water tank holds 4920 litres. 30% of the water is used. How many litres are left?
  13. 13.The price of a bicycle is ₹3080. It goes up by 40%. What is the new price (in ₹)?
  14. 14.The price of a school bag changes from ₹4340 to ₹6510. By what percent did it go up?
  15. 15.The price of a bicycle is ₹2140. It goes up by 40%. What is the new price (in ₹)?
  16. 16.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  17. 17.A town has 80 people. Its population grows by 15%. How many people live there now?
  18. 18.A shop sells 1660 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  19. 19.The price of a bicycle is ₹4560. It goes up by 20%. What is the new price (in ₹)?
  20. 20.The price of a bicycle is ₹4660. It goes up by 30%. What is the new price (in ₹)?
  21. 21.The price of a bicycle is ₹960. It goes up by 10%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹3500 to ₹3325. By what percent did it come down?
  23. 23.The price of a school bag changes from ₹2280 to ₹1938. By what percent did it come down?
  24. 24.The price of a school bag changes from ₹2280 to ₹3420. By what percent did it go up?
  25. 25.A town has 800 people. Its population grows by 15%. How many people live there now?
  26. 26.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹4780 to ₹6214. By what percent did it go up?
  28. 28.The price of a school bag changes from ₹4480 to ₹4704. By what percent did it go up?
  29. 29.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹2040 to ₹2652. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹460 to ₹529. By what percent did it go up?
  32. 32.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  33. 33.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 1600 litres. 40% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹2840 to ₹2414. By what percent did it come down?
  36. 36.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹180 to ₹90. By what percent did it come down?
  38. 38.The price of a school bag changes from ₹4240 to ₹4452. By what percent did it go up?
  39. 39.The price of a bicycle is ₹4060. It goes up by 50%. What is the new price (in ₹)?
  40. 40.A water tank holds 2540 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 40
  2. 1248
  3. 20
  4. 242
  5. 3806
  6. 20
  7. 1472
  8. 1596
  9. 69
  10. 1207
  11. 5252
  12. 3444
  13. 4312
  14. 50
  15. 2996
  16. 65
  17. 92
  18. 2490
  19. 5472
  20. 6058
  21. 1056
  22. 5
  23. 15
  24. 50
  25. 920
  26. 24
  27. 30
  28. 5
  29. 2
  30. 30
  31. 15
  32. 36
  33. 62.5
  34. 960
  35. 15
  36. 43
  37. 50
  38. 5
  39. 6090
  40. 1524

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