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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 635 · 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 ₹360. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹2220 to ₹1332. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹260 to ₹182. By what percent did it come down?
  4. 4.A town has 1360 people. Its population grows by 10%. How many people live there now?
  5. 5.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  6. 6.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹1040 to ₹1456. By what percent did it go up?
  8. 8.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.A shop sells 2900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  10. 10.A shop sells 2720 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  11. 11.A town has 600 people. Its population grows by 10%. How many people live there now?
  12. 12.The price of a school bag changes from ₹2280 to ₹2964. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹4740 to ₹4266. By what percent did it come down?
  14. 14.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  15. 15.A water tank holds 1500 litres. 25% of the water is used. How many litres are left?
  16. 16.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  17. 17.A water tank holds 2620 litres. 10% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹2740 to ₹3151. By what percent did it go up?
  19. 19.A water tank holds 3740 litres. 10% of the water is used. How many litres are left?
  20. 20.The price of a bicycle is ₹1000. It goes up by 10%. What is the new price (in ₹)?
  21. 21.The price of a bicycle is ₹1820. It goes up by 25%. What is the new price (in ₹)?
  22. 22.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  23. 23.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  24. 24.The price of a bicycle is ₹2620. It goes up by 15%. What is the new price (in ₹)?
  25. 25.A shop sells 2880 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  26. 26.A water tank holds 1080 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹80 to ₹48. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹920 to ₹690. By what percent did it come down?
  29. 29.The price of a bicycle is ₹4340. It goes up by 25%. What is the new price (in ₹)?
  30. 30.The price of a school bag changes from ₹2600 to ₹2080. By what percent did it come down?
  31. 31.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  32. 32.A water tank holds 3780 litres. 10% of the water is used. How many litres are left?
  33. 33.A water tank holds 3080 litres. 40% of the water is used. How many litres are left?
  34. 34.A water tank holds 4700 litres. 25% of the water is used. How many litres are left?
  35. 35.A water tank holds 2760 litres. 10% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹2480 to ₹2604. By what percent did it go up?
  37. 37.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹4460 to ₹5129. By what percent did it go up?
  39. 39.A water tank holds 2860 litres. 25% of the water is used. How many litres are left?
  40. 40.A town has 3360 people. Its population grows by 10%. How many people live there now?

Answer key

  1. 540
  2. 40
  3. 30
  4. 1496
  5. 26.5
  6. 72.5
  7. 40
  8. 44
  9. 4350
  10. 3128
  11. 660
  12. 30
  13. 10
  14. 14
  15. 1125
  16. 9.75
  17. 2358
  18. 15
  19. 3366
  20. 1100
  21. 2275
  22. 10.5
  23. 4
  24. 3013
  25. 3600
  26. 1026
  27. 40
  28. 25
  29. 5425
  30. 20
  31. 49.5
  32. 3402
  33. 1848
  34. 3525
  35. 2484
  36. 5
  37. 28
  38. 15
  39. 2145
  40. 3696

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