← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 345 · 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 bicycle is ₹2060. It goes up by 10%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹4020 to ₹5226. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹4780 to ₹3585. By what percent did it come down?
  4. 4.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  5. 5.A shop sells 2060 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  6. 6.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 2620 litres. 15% of the water is used. How many litres are left?
  8. 8.A price goes up by 20% and then goes up by 30% more. By what percent has it gone up in all? =
  9. 9.The price of a bicycle is ₹1380. It goes up by 5%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹4920 to ₹3690. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹260 to ₹195. By what percent did it come down?
  12. 12.The price of a school bag changes from ₹400 to ₹360. By what percent did it come down?
  13. 13.A water tank holds 1220 litres. 10% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹840. It goes up by 30%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹1000 to ₹800. By what percent did it come down?
  16. 16.The price of a bicycle is ₹1060. It goes up by 5%. What is the new price (in ₹)?
  17. 17.The price of a bicycle is ₹4600. It goes up by 15%. What is the new price (in ₹)?
  18. 18.A water tank holds 2920 litres. 25% of the water is used. How many litres are left?
  19. 19.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  20. 20.A water tank holds 1100 litres. 25% of the water is used. How many litres are left?
  21. 21.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  22. 22.A water tank holds 2040 litres. 50% of the water is used. How many litres are left?
  23. 23.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  24. 24.A town has 3720 people. Its population grows by 40%. How many people live there now?
  25. 25.A water tank holds 2220 litres. 15% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹2080 to ₹2600. By what percent did it go up?
  27. 27.The price of a bicycle is ₹4240. It goes up by 40%. What is the new price (in ₹)?
  28. 28.The price of a bicycle is ₹640. It goes up by 25%. What is the new price (in ₹)?
  29. 29.A water tank holds 460 litres. 5% of the water is used. How many litres are left?
  30. 30.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 580 litres. 40% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹1120 to ₹1344. By what percent did it go up?
  33. 33.A water tank holds 2360 litres. 50% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹3460 to ₹2941. By what percent did it come down?
  35. 35.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 320 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹1740 to ₹2436. By what percent did it go up?
  38. 38.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹200 to ₹160. By what percent did it come down?
  40. 40.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =

Answer key

  1. 2266
  2. 30
  3. 25
  4. 26
  5. 2575
  6. 38
  7. 2227
  8. 56
  9. 1449
  10. 25
  11. 25
  12. 10
  13. 1098
  14. 1092
  15. 20
  16. 1113
  17. 5290
  18. 2190
  19. 46
  20. 825
  21. 5
  22. 1020
  23. 110
  24. 5208
  25. 1887
  26. 25
  27. 5936
  28. 800
  29. 437
  30. 15.5
  31. 348
  32. 20
  33. 1180
  34. 15
  35. 31.25
  36. 304
  37. 40
  38. 54
  39. 20
  40. 12.5

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude