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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 186 · 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.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  4. 4.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  5. 5.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  6. 6.A town has 2100 people. Its population grows by 10%. How many people live there now?
  7. 7.The price of a bicycle is ₹4280. It goes up by 40%. What is the new price (in ₹)?
  8. 8.The price of a bicycle is ₹540. It goes up by 5%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹3560 to ₹2670. By what percent did it come down?
  10. 10.The price of a bicycle is ₹1000. It goes up by 10%. What is the new price (in ₹)?
  11. 11.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  12. 12.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
  13. 13.A water tank holds 4100 litres. 5% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹3920 to ₹3528. By what percent did it come down?
  15. 15.The price of a school bag changes from ₹4520 to ₹4068. By what percent did it come down?
  16. 16.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.A shop sells 2040 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  18. 18.A shop sells 1580 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  19. 19.A water tank holds 2760 litres. 40% of the water is used. How many litres are left?
  20. 20.A water tank holds 3620 litres. 15% of the water is used. How many litres are left?
  21. 21.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  22. 22.The price of a bicycle is ₹960. It goes up by 5%. What is the new price (in ₹)?
  23. 23.A water tank holds 180 litres. 15% of the water is used. How many litres are left?
  24. 24.A water tank holds 4540 litres. 40% of the water is used. How many litres are left?
  25. 25.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  26. 26.A town has 2400 people. Its population grows by 25%. How many people live there now?
  27. 27.The price of a school bag changes from ₹1540 to ₹770. By what percent did it come down?
  28. 28.The price of a school bag changes from ₹60 to ₹78. By what percent did it go up?
  29. 29.The price of a bicycle is ₹3080. It goes up by 20%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹1420. It goes up by 50%. What is the new price (in ₹)?
  31. 31.A water tank holds 640 litres. 20% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹1320 to ₹924. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹3620 to ₹2896. By what percent did it come down?
  34. 34.A shop sells 2820 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  35. 35.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  36. 36.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹2160 to ₹2700. By what percent did it go up?
  38. 38.A shop sells 760 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.A water tank holds 220 litres. 25% of the water is used. How many litres are left?
  40. 40.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =

Answer key

  1. 14.5
  2. 23.5
  3. 75
  4. 57.5
  5. 28
  6. 2310
  7. 5992
  8. 567
  9. 25
  10. 1100
  11. 95
  12. 62.5
  13. 3895
  14. 10
  15. 10
  16. 54
  17. 3060
  18. 1817
  19. 1656
  20. 3077
  21. 52
  22. 1008
  23. 153
  24. 2724
  25. 37
  26. 3000
  27. 50
  28. 30
  29. 3696
  30. 2130
  31. 512
  32. 30
  33. 20
  34. 3243
  35. 57.5
  36. 9.25
  37. 25
  38. 1140
  39. 165
  40. 72.5

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