← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 259 · 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 ₹500 to ₹600. By what percent did it go up?
  2. 2.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  3. 3.The price of a bicycle is ₹3840. It goes up by 5%. What is the new price (in ₹)?
  4. 4.The price of a bicycle is ₹3300. It goes up by 40%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹4660 to ₹3961. By what percent did it come down?
  6. 6.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹1880 to ₹1598. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹3860 to ₹3474. By what percent did it come down?
  9. 9.A water tank holds 4980 litres. 40% of the water is used. How many litres are left?
  10. 10.A town has 3600 people. Its population grows by 5%. How many people live there now?
  11. 11.The price of a school bag changes from ₹4260 to ₹5538. By what percent did it go up?
  12. 12.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  13. 13.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  14. 14.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  15. 15.A water tank holds 3360 litres. 20% of the water is used. How many litres are left?
  16. 16.The price of a school bag changes from ₹3100 to ₹2480. By what percent did it come down?
  17. 17.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹720 to ₹864. By what percent did it go up?
  19. 19.A water tank holds 1440 litres. 40% of the water is used. How many litres are left?
  20. 20.A water tank holds 3660 litres. 15% of the water is used. How many litres are left?
  21. 21.A water tank holds 3900 litres. 10% of the water is used. How many litres are left?
  22. 22.A water tank holds 500 litres. 10% of the water is used. How many litres are left?
  23. 23.A shop sells 2540 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  24. 24.The price of a bicycle is ₹760. It goes up by 25%. What is the new price (in ₹)?
  25. 25.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹4560 to ₹4788. By what percent did it go up?
  27. 27.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  28. 28.A shop sells 680 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  29. 29.A shop sells 340 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  30. 30.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  31. 31.A shop sells 920 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  32. 32.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹440 to ₹484. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹2720 to ₹3808. By what percent did it go up?
  35. 35.A water tank holds 4400 litres. 10% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1440 to ₹1512. By what percent did it go up?
  37. 37.A water tank holds 3860 litres. 40% of the water is used. How many litres are left?
  38. 38.A shop sells 4260 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A water tank holds 4840 litres. 20% of the water is used. How many litres are left?
  40. 40.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =

Answer key

  1. 20
  2. 19.25
  3. 4032
  4. 4620
  5. 15
  6. 20.75
  7. 15
  8. 10
  9. 2988
  10. 3780
  11. 30
  12. 15.5
  13. 27.75
  14. 65
  15. 2688
  16. 20
  17. 57.5
  18. 20
  19. 864
  20. 3111
  21. 3510
  22. 450
  23. 2794
  24. 950
  25. 72.5
  26. 5
  27. 3.5
  28. 816
  29. 391
  30. 58
  31. 1380
  32. 52.5
  33. 10
  34. 40
  35. 3960
  36. 5
  37. 2316
  38. 6390
  39. 3872
  40. 55

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