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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 67 · 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 ₹2820. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A shop sells 1000 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  3. 3.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹1080 to ₹540. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹1900 to ₹1995. By what percent did it go up?
  6. 6.The price of a bicycle is ₹1480. It goes up by 40%. What is the new price (in ₹)?
  7. 7.The price of a bicycle is ₹2820. It goes up by 15%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹1700 to ₹2210. By what percent did it go up?
  9. 9.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹60 to ₹78. By what percent did it go up?
  11. 11.The price of a school bag changes from ₹4760 to ₹4998. By what percent did it go up?
  12. 12.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  13. 13.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  14. 14.The price of a bicycle is ₹480. It goes up by 30%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹3480 to ₹4872. By what percent did it go up?
  16. 16.A water tank holds 220 litres. 40% of the water is used. How many litres are left?
  17. 17.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  18. 18.The price of a school bag changes from ₹800 to ₹840. By what percent did it go up?
  19. 19.A shop sells 260 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  20. 20.A water tank holds 2040 litres. 20% of the water is used. How many litres are left?
  21. 21.A water tank holds 3640 litres. 50% of the water is used. How many litres are left?
  22. 22.The price of a bicycle is ₹3220. It goes up by 15%. What is the new price (in ₹)?
  23. 23.A water tank holds 1020 litres. 25% of the water is used. How many litres are left?
  24. 24.A town has 1100 people. Its population grows by 5%. How many people live there now?
  25. 25.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  26. 26.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  27. 27.A shop sells 4600 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  28. 28.A water tank holds 2040 litres. 30% of the water is used. How many litres are left?
  29. 29.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  30. 30.A shop sells 1120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  31. 31.The price of a school bag changes from ₹700 to ₹910. By what percent did it go up?
  32. 32.A town has 4840 people. Its population grows by 5%. How many people live there now?
  33. 33.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 2060 litres. 20% of the water is used. How many litres are left?
  35. 35.A shop sells 1340 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  36. 36.A water tank holds 1240 litres. 50% of the water is used. How many litres are left?
  37. 37.A shop sells 3060 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹3200 to ₹2880. By what percent did it come down?
  39. 39.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹1240 to ₹1550. By what percent did it go up?

Answer key

  1. 3525
  2. 1150
  3. 26
  4. 50
  5. 5
  6. 2072
  7. 3243
  8. 30
  9. 5
  10. 30
  11. 5
  12. 55
  13. 65
  14. 624
  15. 40
  16. 132
  17. 75
  18. 5
  19. 390
  20. 1632
  21. 1820
  22. 3703
  23. 765
  24. 1155
  25. 19
  26. 62.5
  27. 5060
  28. 1428
  29. 52
  30. 1400
  31. 30
  32. 5082
  33. 57.5
  34. 1648
  35. 1742
  36. 620
  37. 3213
  38. 10
  39. 36
  40. 25

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