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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 275 · 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 ₹700 to ₹910. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹80 to ₹88. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹3980 to ₹2786. By what percent did it come down?
  4. 4.The price of a bicycle is ₹2180. It goes up by 20%. What is the new price (in ₹)?
  5. 5.A town has 1460 people. Its population grows by 5%. How many people live there now?
  6. 6.A water tank holds 3200 litres. 50% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹720 to ₹684. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹4080 to ₹3264. By what percent did it come down?
  9. 9.The price of a bicycle is ₹260. It goes up by 15%. What is the new price (in ₹)?
  10. 10.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 4540 litres. 25% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹1300. It goes up by 30%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹960 to ₹576. By what percent did it come down?
  14. 14.A town has 300 people. Its population grows by 5%. How many people live there now?
  15. 15.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  16. 16.A shop sells 1200 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  17. 17.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  18. 18.The price of a bicycle is ₹2180. It goes up by 50%. What is the new price (in ₹)?
  19. 19.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  20. 20.A water tank holds 920 litres. 50% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹1920 to ₹2880. By what percent did it go up?
  22. 22.A town has 2440 people. Its population grows by 30%. How many people live there now?
  23. 23.A shop sells 2240 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  24. 24.A town has 2160 people. Its population grows by 10%. How many people live there now?
  25. 25.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  26. 26.A town has 60 people. Its population grows by 10%. How many people live there now?
  27. 27.The price of a school bag changes from ₹520 to ₹624. By what percent did it go up?
  28. 28.A town has 2860 people. Its population grows by 40%. How many people live there now?
  29. 29.The price of a school bag changes from ₹3720 to ₹2790. By what percent did it come down?
  30. 30.A water tank holds 3860 litres. 30% of the water is used. How many litres are left?
  31. 31.A water tank holds 480 litres. 40% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹3380 to ₹4056. By what percent did it go up?
  33. 33.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  34. 34.A town has 3380 people. Its population grows by 50%. How many people live there now?
  35. 35.A water tank holds 1840 litres. 15% of the water is used. How many litres are left?
  36. 36.A shop sells 660 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.The price of a bicycle is ₹4700. It goes up by 10%. What is the new price (in ₹)?
  38. 38.A town has 1120 people. Its population grows by 10%. How many people live there now?
  39. 39.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  40. 40.A water tank holds 2500 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 30
  2. 10
  3. 30
  4. 2616
  5. 1533
  6. 1600
  7. 5
  8. 20
  9. 299
  10. 36.5
  11. 3405
  12. 1690
  13. 40
  14. 315
  15. 68
  16. 1320
  17. 52.5
  18. 3270
  19. 26
  20. 460
  21. 50
  22. 3172
  23. 2912
  24. 2376
  25. 49
  26. 66
  27. 20
  28. 4004
  29. 25
  30. 2702
  31. 288
  32. 20
  33. 43.75
  34. 5070
  35. 1564
  36. 990
  37. 5170
  38. 1232
  39. 72.5
  40. 2125

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