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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 176 · 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 ₹60. It goes up by 10%. What is the new price (in ₹)?
  2. 2.The price of a school bag changes from ₹4520 to ₹5424. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹4640 to ₹5104. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹680 to ₹952. By what percent did it go up?
  5. 5.A water tank holds 3800 litres. 40% of the water is used. How many litres are left?
  6. 6.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
  7. 7.A town has 900 people. Its population grows by 15%. How many people live there now?
  8. 8.The price of a school bag changes from ₹1260 to ₹1764. By what percent did it go up?
  9. 9.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  10. 10.A water tank holds 1120 litres. 10% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹1400 to ₹1190. By what percent did it come down?
  12. 12.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 1420 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹600. It goes up by 30%. What is the new price (in ₹)?
  15. 15.A shop sells 1500 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.A water tank holds 3800 litres. 30% of the water is used. How many litres are left?
  17. 17.The price of a school bag changes from ₹3260 to ₹2771. By what percent did it come down?
  18. 18.A water tank holds 1180 litres. 25% of the water is used. How many litres are left?
  19. 19.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  20. 20.A water tank holds 4680 litres. 10% of the water is used. How many litres are left?
  21. 21.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  22. 22.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  23. 23.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  24. 24.A water tank holds 3220 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹860. It goes up by 40%. What is the new price (in ₹)?
  26. 26.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹560 to ₹840. By what percent did it go up?
  28. 28.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  29. 29.A shop sells 1380 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  30. 30.A water tank holds 2640 litres. 10% of the water is used. How many litres are left?
  31. 31.A shop sells 2540 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  32. 32.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
  33. 33.A water tank holds 4720 litres. 5% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹1760 to ₹1584. By what percent did it come down?
  35. 35.A town has 3600 people. Its population grows by 30%. How many people live there now?
  36. 36.The price of a school bag changes from ₹4580 to ₹5267. By what percent did it go up?
  37. 37.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹60 to ₹63. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹2860 to ₹3003. By what percent did it go up?

Answer key

  1. 66
  2. 20
  3. 10
  4. 40
  5. 2280
  6. 56
  7. 1035
  8. 40
  9. 46
  10. 1008
  11. 15
  12. 87.5
  13. 1349
  14. 780
  15. 1875
  16. 2660
  17. 15
  18. 885
  19. 33.5
  20. 4212
  21. 61
  22. 20
  23. 44
  24. 1932
  25. 1204
  26. 19.25
  27. 50
  28. 44
  29. 1932
  30. 2376
  31. 2667
  32. 720
  33. 4484
  34. 10
  35. 4680
  36. 15
  37. 15.5
  38. 4
  39. 5
  40. 5

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