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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 959 · 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 goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹2360 to ₹1652. By what percent did it come down?
  3. 3.A water tank holds 240 litres. 25% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹1340 to ₹1005. By what percent did it come down?
  5. 5.A town has 4200 people. Its population grows by 20%. How many people live there now?
  6. 6.The price of a bicycle is ₹4760. It goes up by 20%. What is the new price (in ₹)?
  7. 7.The price of a bicycle is ₹200. It goes up by 10%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹520. It goes up by 40%. What is the new price (in ₹)?
  9. 9.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 3620 litres. 50% of the water is used. How many litres are left?
  11. 11.A town has 3580 people. Its population grows by 5%. How many people live there now?
  12. 12.The price of a school bag changes from ₹3480 to ₹2784. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹1800 to ₹1620. By what percent did it come down?
  14. 14.A water tank holds 3220 litres. 25% of the water is used. How many litres are left?
  15. 15.A water tank holds 2480 litres. 15% of the water is used. How many litres are left?
  16. 16.A town has 3580 people. Its population grows by 25%. How many people live there now?
  17. 17.A water tank holds 2460 litres. 5% of the water is used. How many litres are left?
  18. 18.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  19. 19.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹220 to ₹308. By what percent did it go up?
  21. 21.A water tank holds 4280 litres. 5% of the water is used. How many litres are left?
  22. 22.A water tank holds 180 litres. 10% of the water is used. How many litres are left?
  23. 23.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  24. 24.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹1000 to ₹750. By what percent did it come down?
  26. 26.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹4280 to ₹3852. By what percent did it come down?
  28. 28.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  29. 29.A water tank holds 3880 litres. 25% of the water is used. How many litres are left?
  30. 30.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  31. 31.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹1040. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A water tank holds 760 litres. 40% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹880. It goes up by 25%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹160 to ₹240. By what percent did it go up?
  36. 36.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  37. 37.A town has 4040 people. Its population grows by 15%. How many people live there now?
  38. 38.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹3780 to ₹5292. By what percent did it go up?
  40. 40.A shop sells 820 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 36.5
  2. 30
  3. 180
  4. 25
  5. 5040
  6. 5712
  7. 220
  8. 728
  9. 72.5
  10. 1810
  11. 3759
  12. 20
  13. 10
  14. 2415
  15. 2108
  16. 4475
  17. 2337
  18. 32
  19. 35
  20. 40
  21. 4066
  22. 162
  23. 33.5
  24. 33
  25. 25
  26. 56.25
  27. 10
  28. 28
  29. 2910
  30. 80
  31. 14
  32. 1144
  33. 456
  34. 1100
  35. 50
  36. 32.25
  37. 4646
  38. 36.5
  39. 40
  40. 984

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