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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 978 · 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 comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  2. 2.The price of a bicycle is ₹900. It goes up by 5%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹1280 to ₹896. By what percent did it come down?
  4. 4.A water tank holds 4320 litres. 15% of the water is used. How many litres are left?
  5. 5.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.A water tank holds 1720 litres. 5% of the water is used. How many litres are left?
  7. 7.A town has 4780 people. Its population grows by 30%. How many people live there now?
  8. 8.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  9. 9.The price of a school bag changes from ₹2360 to ₹3068. By what percent did it go up?
  10. 10.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹3640 to ₹4004. By what percent did it go up?
  12. 12.The price of a school bag changes from ₹3820 to ₹4775. By what percent did it go up?
  13. 13.A water tank holds 4080 litres. 30% of the water is used. How many litres are left?
  14. 14.A water tank holds 2560 litres. 50% of the water is used. How many litres are left?
  15. 15.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹4140 to ₹3312. By what percent did it come down?
  17. 17.A town has 2040 people. Its population grows by 5%. How many people live there now?
  18. 18.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹4520. It goes up by 10%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹4500 to ₹4275. By what percent did it come down?
  21. 21.The price of a bicycle is ₹1720. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.A water tank holds 3260 litres. 50% of the water is used. How many litres are left?
  24. 24.A water tank holds 3060 litres. 10% of the water is used. How many litres are left?
  25. 25.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  26. 26.A town has 2300 people. Its population grows by 50%. How many people live there now?
  27. 27.The price of a school bag changes from ₹1100 to ₹825. By what percent did it come down?
  28. 28.A water tank holds 300 litres. 25% of the water is used. How many litres are left?
  29. 29.A water tank holds 1240 litres. 50% of the water is used. How many litres are left?
  30. 30.A shop sells 1740 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹4400 to ₹5720. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹1000 to ₹1100. By what percent did it go up?
  33. 33.The price of a bicycle is ₹2780. It goes up by 40%. What is the new price (in ₹)?
  34. 34.A water tank holds 4080 litres. 25% of the water is used. How many litres are left?
  35. 35.A water tank holds 240 litres. 25% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹500 to ₹525. By what percent did it go up?
  37. 37.The price of a bicycle is ₹4880. It goes up by 40%. What is the new price (in ₹)?
  38. 38.The price of a school bag changes from ₹1020 to ₹1530. By what percent did it go up?
  39. 39.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  40. 40.A water tank holds 3380 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 47.5
  2. 945
  3. 30
  4. 3672
  5. 110
  6. 1634
  7. 6214
  8. 36.5
  9. 30
  10. 26.5
  11. 10
  12. 25
  13. 2856
  14. 1280
  15. 4
  16. 20
  17. 2142
  18. 40
  19. 4972
  20. 5
  21. 2064
  22. 57.5
  23. 1630
  24. 2754
  25. 46
  26. 3450
  27. 25
  28. 225
  29. 620
  30. 2262
  31. 30
  32. 10
  33. 3892
  34. 3060
  35. 180
  36. 5
  37. 6832
  38. 50
  39. 64
  40. 2028

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