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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 479 · 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 ₹180 to ₹270. By what percent did it go up?
  2. 2.The price of a bicycle is ₹1460. It goes up by 50%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹220 to ₹198. By what percent did it come down?
  4. 4.The price of a school bag changes from ₹2000 to ₹1900. By what percent did it come down?
  5. 5.A water tank holds 4300 litres. 25% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹4300 to ₹3010. By what percent did it come down?
  7. 7.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  8. 8.A town has 3100 people. Its population grows by 40%. How many people live there now?
  9. 9.The price of a school bag changes from ₹1900 to ₹2660. By what percent did it go up?
  10. 10.A water tank holds 1740 litres. 40% of the water is used. How many litres are left?
  11. 11.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
  12. 12.A water tank holds 980 litres. 10% of the water is used. How many litres are left?
  13. 13.A town has 1740 people. Its population grows by 10%. How many people live there now?
  14. 14.A shop sells 880 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  15. 15.A town has 3720 people. Its population grows by 30%. How many people live there now?
  16. 16.The price of a school bag changes from ₹120 to ₹84. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹2660 to ₹1995. By what percent did it come down?
  18. 18.A town has 1980 people. Its population grows by 40%. How many people live there now?
  19. 19.The price of a bicycle is ₹2700. It goes up by 10%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹1700 to ₹2040. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹3740 to ₹3366. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹1180 to ₹1652. By what percent did it go up?
  23. 23.A water tank holds 1100 litres. 10% of the water is used. How many litres are left?
  24. 24.A water tank holds 3800 litres. 40% of the water is used. How many litres are left?
  25. 25.A water tank holds 400 litres. 30% of the water is used. How many litres are left?
  26. 26.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹2480 to ₹2232. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹2120 to ₹2226. By what percent did it go up?
  29. 29.The price of a bicycle is ₹4720. It goes up by 15%. What is the new price (in ₹)?
  30. 30.A water tank holds 1340 litres. 30% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹1840. It goes up by 50%. What is the new price (in ₹)?
  32. 32.The price of a school bag changes from ₹680 to ₹612. By what percent did it come down?
  33. 33.The price of a bicycle is ₹1080. It goes up by 25%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹3820. It goes up by 30%. What is the new price (in ₹)?
  35. 35.A water tank holds 4660 litres. 50% of the water is used. How many litres are left?
  36. 36.A water tank holds 3860 litres. 25% of the water is used. How many litres are left?
  37. 37.A water tank holds 2900 litres. 15% of the water is used. How many litres are left?
  38. 38.A water tank holds 4300 litres. 50% of the water is used. How many litres are left?
  39. 39.A water tank holds 3200 litres. 20% of the water is used. How many litres are left?
  40. 40.A water tank holds 3980 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 50
  2. 2190
  3. 10
  4. 5
  5. 3225
  6. 30
  7. 47.5
  8. 4340
  9. 40
  10. 1044
  11. 28.75
  12. 882
  13. 1914
  14. 968
  15. 4836
  16. 30
  17. 25
  18. 2772
  19. 2970
  20. 20
  21. 10
  22. 40
  23. 990
  24. 2280
  25. 280
  26. 4.5
  27. 10
  28. 5
  29. 5428
  30. 938
  31. 2760
  32. 10
  33. 1350
  34. 4966
  35. 2330
  36. 2895
  37. 2465
  38. 2150
  39. 2560
  40. 2786

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