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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 835 · 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 bicycle is ₹4720. It goes up by 30%. What is the new price (in ₹)?
  2. 2.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  3. 3.The price of a bicycle is ₹700. It goes up by 25%. What is the new price (in ₹)?
  4. 4.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  5. 5.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  6. 6.A town has 2100 people. Its population grows by 10%. How many people live there now?
  7. 7.The price of a school bag changes from ₹3700 to ₹4440. By what percent did it go up?
  8. 8.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  9. 9.A shop sells 4900 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  10. 10.A water tank holds 3320 litres. 10% of the water is used. How many litres are left?
  11. 11.A water tank holds 4320 litres. 15% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹1160. It goes up by 40%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹2780 to ₹3058. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹2380 to ₹2142. By what percent did it come down?
  15. 15.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  16. 16.The price of a school bag changes from ₹4840 to ₹6776. By what percent did it go up?
  17. 17.A town has 2020 people. Its population grows by 10%. How many people live there now?
  18. 18.The price of a school bag changes from ₹4840 to ₹4356. By what percent did it come down?
  19. 19.A water tank holds 720 litres. 50% of the water is used. How many litres are left?
  20. 20.A water tank holds 4860 litres. 30% of the water is used. How many litres are left?
  21. 21.A water tank holds 100 litres. 15% of the water is used. How many litres are left?
  22. 22.A water tank holds 1900 litres. 40% of the water is used. How many litres are left?
  23. 23.A shop sells 4160 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  24. 24.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  25. 25.A water tank holds 3380 litres. 20% of the water is used. How many litres are left?
  26. 26.A shop sells 4480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  27. 27.A water tank holds 3140 litres. 15% of the water is used. How many litres are left?
  28. 28.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹820 to ₹902. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹3340 to ₹4342. By what percent did it go up?
  31. 31.The price of a school bag changes from ₹1180 to ₹1298. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹580 to ₹725. By what percent did it go up?
  33. 33.A town has 2480 people. Its population grows by 20%. How many people live there now?
  34. 34.The price of a school bag changes from ₹4800 to ₹3360. By what percent did it come down?
  35. 35.A water tank holds 580 litres. 25% of the water is used. How many litres are left?
  36. 36.A town has 2040 people. Its population grows by 20%. How many people live there now?
  37. 37.A town has 1200 people. Its population grows by 30%. How many people live there now?
  38. 38.The price of a school bag changes from ₹4600 to ₹2760. By what percent did it come down?
  39. 39.A town has 3060 people. Its population grows by 10%. How many people live there now?
  40. 40.A shop sells 4440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?

Answer key

  1. 6136
  2. 52
  3. 875
  4. 14
  5. 54
  6. 2310
  7. 20
  8. 10.5
  9. 5145
  10. 2988
  11. 3672
  12. 1624
  13. 10
  14. 10
  15. 37
  16. 40
  17. 2222
  18. 10
  19. 360
  20. 3402
  21. 85
  22. 1140
  23. 5408
  24. 3.5
  25. 2704
  26. 5152
  27. 2669
  28. 49.5
  29. 10
  30. 30
  31. 10
  32. 25
  33. 2976
  34. 30
  35. 435
  36. 2448
  37. 1560
  38. 40
  39. 3366
  40. 4884

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