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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 461 · 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 water tank holds 3740 litres. 15% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹4560 to ₹4104. By what percent did it come down?
  3. 3.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  4. 4.A water tank holds 1580 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹3840 to ₹3648. By what percent did it come down?
  6. 6.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  7. 7.A shop sells 2020 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  8. 8.The price of a bicycle is ₹2100. It goes up by 25%. What is the new price (in ₹)?
  9. 9.A shop sells 2860 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  10. 10.A water tank holds 3340 litres. 5% of the water is used. How many litres are left?
  11. 11.A water tank holds 1020 litres. 40% of the water is used. How many litres are left?
  12. 12.A water tank holds 920 litres. 10% of the water is used. How many litres are left?
  13. 13.A water tank holds 4120 litres. 30% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹4220. It goes up by 50%. What is the new price (in ₹)?
  15. 15.The price of a bicycle is ₹1120. It goes up by 10%. What is the new price (in ₹)?
  16. 16.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹4920 to ₹4428. By what percent did it come down?
  18. 18.A shop sells 1180 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  19. 19.The price of a bicycle is ₹3300. It goes up by 30%. What is the new price (in ₹)?
  20. 20.A shop sells 4920 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  21. 21.A water tank holds 4600 litres. 10% of the water is used. How many litres are left?
  22. 22.A water tank holds 1640 litres. 15% of the water is used. How many litres are left?
  23. 23.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹1780 to ₹1246. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹80 to ₹88. By what percent did it go up?
  26. 26.A water tank holds 600 litres. 30% of the water is used. How many litres are left?
  27. 27.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹860 to ₹946. By what percent did it go up?
  29. 29.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹460 to ₹529. By what percent did it go up?
  31. 31.A water tank holds 4120 litres. 5% of the water is used. How many litres are left?
  32. 32.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  33. 33.A town has 980 people. Its population grows by 5%. How many people live there now?
  34. 34.A shop sells 2020 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  35. 35.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹620. It goes up by 25%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹2080 to ₹2288. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹340 to ₹306. By what percent did it come down?
  39. 39.A water tank holds 4120 litres. 25% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹380 to ₹361. By what percent did it come down?

Answer key

  1. 3179
  2. 10
  3. 32.25
  4. 1106
  5. 5
  6. 32
  7. 2323
  8. 2625
  9. 4004
  10. 3173
  11. 612
  12. 828
  13. 2884
  14. 6330
  15. 1232
  16. 46
  17. 10
  18. 1357
  19. 4290
  20. 6396
  21. 4140
  22. 1394
  23. 57.5
  24. 30
  25. 10
  26. 420
  27. 23.5
  28. 10
  29. 61
  30. 15
  31. 3914
  32. 9.75
  33. 1029
  34. 2525
  35. 26.5
  36. 775
  37. 10
  38. 10
  39. 3090
  40. 5

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