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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 605 · 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 ₹1180 to ₹590. By what percent did it come down?
  2. 2.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  3. 3.A water tank holds 1180 litres. 20% of the water is used. How many litres are left?
  4. 4.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  5. 5.The price of a school bag changes from ₹3680 to ₹3496. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹160 to ₹80. By what percent did it come down?
  7. 7.A water tank holds 1420 litres. 15% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹1720 to ₹1032. By what percent did it come down?
  9. 9.A shop sells 1180 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  10. 10.The price of a school bag changes from ₹1500 to ₹750. By what percent did it come down?
  11. 11.A water tank holds 1780 litres. 15% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹2400. It goes up by 5%. What is the new price (in ₹)?
  13. 13.A water tank holds 540 litres. 40% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹4260 to ₹2556. By what percent did it come down?
  15. 15.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  16. 16.A town has 680 people. Its population grows by 20%. How many people live there now?
  17. 17.A shop sells 1180 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  18. 18.A water tank holds 4940 litres. 25% of the water is used. How many litres are left?
  19. 19.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  20. 20.The price of a bicycle is ₹2200. It goes up by 30%. What is the new price (in ₹)?
  21. 21.A shop sells 2260 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹1780 to ₹2670. By what percent did it go up?
  23. 23.A town has 860 people. Its population grows by 50%. How many people live there now?
  24. 24.A shop sells 200 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  25. 25.The price of a bicycle is ₹220. It goes up by 10%. What is the new price (in ₹)?
  26. 26.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  27. 27.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  28. 28.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  29. 29.A town has 1420 people. Its population grows by 40%. How many people live there now?
  30. 30.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  31. 31.A town has 2320 people. Its population grows by 30%. How many people live there now?
  32. 32.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  33. 33.A water tank holds 3540 litres. 15% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹2980. It goes up by 50%. What is the new price (in ₹)?
  35. 35.A water tank holds 540 litres. 50% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹1240. It goes up by 15%. What is the new price (in ₹)?
  37. 37.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  38. 38.A shop sells 1540 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  39. 39.A water tank holds 300 litres. 25% of the water is used. How many litres are left?
  40. 40.The price of a bicycle is ₹2060. It goes up by 5%. What is the new price (in ₹)?

Answer key

  1. 50
  2. 10.5
  3. 944
  4. 36
  5. 5
  6. 50
  7. 1207
  8. 40
  9. 1652
  10. 50
  11. 1513
  12. 2520
  13. 324
  14. 40
  15. 80
  16. 816
  17. 1298
  18. 3705
  19. 47.5
  20. 2860
  21. 2938
  22. 50
  23. 1290
  24. 220
  25. 242
  26. 19
  27. 82
  28. 33
  29. 1988
  30. 49.5
  31. 3016
  32. 31.25
  33. 3009
  34. 4470
  35. 270
  36. 1426
  37. 61
  38. 1925
  39. 225
  40. 2163

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