← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 41 · 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.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  2. 2.A town has 3560 people. Its population grows by 10%. How many people live there now?
  3. 3.The price of a school bag changes from ₹640 to ₹480. By what percent did it come down?
  4. 4.The price of a school bag changes from ₹4960 to ₹6944. By what percent did it go up?
  5. 5.A water tank holds 880 litres. 30% of the water is used. How many litres are left?
  6. 6.A shop sells 3960 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  8. 8.The price of a bicycle is ₹260. It goes up by 40%. What is the new price (in ₹)?
  9. 9.The price of a bicycle is ₹3880. It goes up by 5%. What is the new price (in ₹)?
  10. 10.A water tank holds 1200 litres. 20% of the water is used. How many litres are left?
  11. 11.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  12. 12.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  13. 13.A water tank holds 1180 litres. 50% of the water is used. How many litres are left?
  14. 14.A water tank holds 4680 litres. 50% of the water is used. How many litres are left?
  15. 15.A water tank holds 180 litres. 5% of the water is used. How many litres are left?
  16. 16.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  17. 17.A water tank holds 640 litres. 5% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹2900 to ₹3625. By what percent did it go up?
  19. 19.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  20. 20.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  22. 22.A water tank holds 4880 litres. 10% of the water is used. How many litres are left?
  23. 23.A water tank holds 740 litres. 10% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹1560 to ₹2340. By what percent did it go up?
  25. 25.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  26. 26.A town has 3560 people. Its population grows by 15%. How many people live there now?
  27. 27.A water tank holds 60 litres. 20% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹2240 to ₹2352. By what percent did it go up?
  29. 29.A shop sells 4620 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  30. 30.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  31. 31.A water tank holds 1980 litres. 10% of the water is used. How many litres are left?
  32. 32.A shop sells 4940 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  33. 33.A shop sells 1580 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  34. 34.The price of a school bag changes from ₹3960 to ₹2376. By what percent did it come down?
  35. 35.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  36. 36.A water tank holds 3340 litres. 20% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹4460 to ₹4906. By what percent did it go up?
  38. 38.A town has 2680 people. Its population grows by 30%. How many people live there now?
  39. 39.The price of a bicycle is ₹4640. It goes up by 30%. What is the new price (in ₹)?
  40. 40.A town has 900 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 27.5
  2. 3916
  3. 25
  4. 40
  5. 616
  6. 5148
  7. 82
  8. 364
  9. 4074
  10. 960
  11. 80
  12. 2
  13. 590
  14. 2340
  15. 171
  16. 15.5
  17. 608
  18. 25
  19. 46
  20. 68
  21. 60
  22. 4392
  23. 666
  24. 50
  25. 26.5
  26. 4094
  27. 48
  28. 5
  29. 6468
  30. 49
  31. 1782
  32. 5434
  33. 2370
  34. 40
  35. 70
  36. 2672
  37. 10
  38. 3484
  39. 6032
  40. 1035

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