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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 541 · 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 school bag changes from ₹4760 to ₹7140. By what percent did it go up?
  2. 2.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.A water tank holds 3040 litres. 30% of the water is used. How many litres are left?
  4. 4.A water tank holds 3040 litres. 50% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹1360. It goes up by 5%. What is the new price (in ₹)?
  6. 6.A water tank holds 840 litres. 20% of the water is used. How many litres are left?
  7. 7.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 4120 litres. 30% of the water is used. How many litres are left?
  9. 9.A shop sells 4280 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  10. 10.The price of a bicycle is ₹760. It goes up by 25%. What is the new price (in ₹)?
  11. 11.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹2160 to ₹3240. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹2760 to ₹3036. By what percent did it go up?
  14. 14.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  15. 15.A water tank holds 2440 litres. 30% of the water is used. How many litres are left?
  16. 16.A shop sells 4040 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  17. 17.A water tank holds 4940 litres. 30% of the water is used. How many litres are left?
  18. 18.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  19. 19.A water tank holds 2920 litres. 50% of the water is used. How many litres are left?
  20. 20.A town has 2980 people. Its population grows by 40%. How many people live there now?
  21. 21.The price of a bicycle is ₹4940. It goes up by 50%. What is the new price (in ₹)?
  22. 22.A water tank holds 1940 litres. 40% of the water is used. How many litres are left?
  23. 23.The price of a bicycle is ₹4900. It goes up by 15%. What is the new price (in ₹)?
  24. 24.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  25. 25.A water tank holds 3880 litres. 25% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹3920. It goes up by 15%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹4440 to ₹3552. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹920 to ₹874. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹4740 to ₹2844. By what percent did it come down?
  30. 30.A town has 3400 people. Its population grows by 15%. How many people live there now?
  31. 31.The price of a bicycle is ₹2220. It goes up by 5%. What is the new price (in ₹)?
  32. 32.The price of a bicycle is ₹1400. It goes up by 20%. What is the new price (in ₹)?
  33. 33.The price of a bicycle is ₹3180. It goes up by 15%. What is the new price (in ₹)?
  34. 34.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹1500 to ₹1650. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹1200 to ₹1320. By what percent did it go up?
  37. 37.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 2780 litres. 50% of the water is used. How many litres are left?
  39. 39.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹200 to ₹150. By what percent did it come down?

Answer key

  1. 50
  2. 26.5
  3. 2128
  4. 1520
  5. 1428
  6. 672
  7. 87.5
  8. 2884
  9. 5350
  10. 950
  11. 72.5
  12. 50
  13. 10
  14. 14.5
  15. 1708
  16. 6060
  17. 3458
  18. 37.5
  19. 1460
  20. 4172
  21. 7410
  22. 1164
  23. 5635
  24. 40.5
  25. 2910
  26. 4508
  27. 20
  28. 5
  29. 40
  30. 3910
  31. 2331
  32. 1680
  33. 3657
  34. 47
  35. 10
  36. 10
  37. 57.5
  38. 1390
  39. 32
  40. 25

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