← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 850 · 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 ₹1020 to ₹816. By what percent did it come down?
  2. 2.A water tank holds 2960 litres. 40% of the water is used. How many litres are left?
  3. 3.A water tank holds 440 litres. 25% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹2600 to ₹2730. By what percent did it go up?
  5. 5.A town has 3640 people. Its population grows by 5%. How many people live there now?
  6. 6.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  7. 7.A water tank holds 2020 litres. 25% of the water is used. How many litres are left?
  8. 8.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  9. 9.A water tank holds 3460 litres. 5% of the water is used. How many litres are left?
  10. 10.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 3220 litres. 5% of the water is used. How many litres are left?
  12. 12.A shop sells 4940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  13. 13.A water tank holds 5000 litres. 25% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹2200 to ₹1650. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹440 to ₹572. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹3340 to ₹5010. By what percent did it go up?
  17. 17.A town has 3260 people. Its population grows by 40%. How many people live there now?
  18. 18.The price of a school bag changes from ₹3360 to ₹3696. By what percent did it go up?
  19. 19.A water tank holds 1360 litres. 15% of the water is used. How many litres are left?
  20. 20.A water tank holds 200 litres. 5% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹640 to ₹576. By what percent did it come down?
  22. 22.The price of a bicycle is ₹1280. It goes up by 20%. What is the new price (in ₹)?
  23. 23.A town has 3740 people. Its population grows by 10%. How many people live there now?
  24. 24.A town has 780 people. Its population grows by 30%. How many people live there now?
  25. 25.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹4800 to ₹4080. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹3080 to ₹2310. By what percent did it come down?
  28. 28.A water tank holds 2880 litres. 5% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹480. It goes up by 10%. What is the new price (in ₹)?
  30. 30.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  31. 31.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  32. 32.The price of a bicycle is ₹1200. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 1620 litres. 25% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹2540. It goes up by 30%. What is the new price (in ₹)?
  36. 36.The price of a school bag changes from ₹660 to ₹990. By what percent did it go up?
  37. 37.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  38. 38.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹660 to ₹627. By what percent did it come down?
  40. 40.The price of a bicycle is ₹1480. It goes up by 50%. What is the new price (in ₹)?

Answer key

  1. 20
  2. 1776
  3. 330
  4. 5
  5. 3822
  6. 32.25
  7. 1515
  8. 58
  9. 3287
  10. 68
  11. 3059
  12. 5681
  13. 3750
  14. 25
  15. 30
  16. 50
  17. 4564
  18. 10
  19. 1156
  20. 190
  21. 10
  22. 1536
  23. 4114
  24. 1014
  25. 125
  26. 15
  27. 25
  28. 2736
  29. 528
  30. 21
  31. 49
  32. 1320
  33. 80
  34. 1215
  35. 3302
  36. 50
  37. 60
  38. 68
  39. 5
  40. 2220

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