← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 87 · 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 ₹200 to ₹150. By what percent did it come down?
  2. 2.The price of a bicycle is ₹460. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹2700 to ₹2565. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹4320 to ₹5616. By what percent did it go up?
  6. 6.A shop sells 940 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  7. 7.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹2980 to ₹4172. By what percent did it go up?
  9. 9.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  10. 10.The price of a bicycle is ₹4720. It goes up by 50%. What is the new price (in ₹)?
  11. 11.The price of a bicycle is ₹4000. It goes up by 30%. What is the new price (in ₹)?
  12. 12.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  13. 13.The price of a bicycle is ₹3600. It goes up by 30%. What is the new price (in ₹)?
  14. 14.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  15. 15.A water tank holds 2700 litres. 40% of the water is used. How many litres are left?
  16. 16.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  17. 17.A water tank holds 1640 litres. 40% of the water is used. How many litres are left?
  18. 18.A shop sells 1820 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  19. 19.A water tank holds 940 litres. 10% of the water is used. How many litres are left?
  20. 20.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.A town has 1560 people. Its population grows by 5%. How many people live there now?
  22. 22.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹260 to ₹234. By what percent did it come down?
  24. 24.The price of a bicycle is ₹4420. It goes up by 5%. What is the new price (in ₹)?
  25. 25.A town has 720 people. Its population grows by 15%. How many people live there now?
  26. 26.A water tank holds 200 litres. 10% of the water is used. How many litres are left?
  27. 27.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  28. 28.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  29. 29.A town has 2320 people. Its population grows by 20%. How many people live there now?
  30. 30.The price of a school bag changes from ₹3620 to ₹4163. By what percent did it go up?
  31. 31.A water tank holds 2740 litres. 25% of the water is used. How many litres are left?
  32. 32.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹660 to ₹759. By what percent did it go up?
  34. 34.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  35. 35.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
  36. 36.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  37. 37.A water tank holds 2180 litres. 40% of the water is used. How many litres are left?
  38. 38.A water tank holds 760 litres. 40% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹2960 to ₹2516. By what percent did it come down?
  40. 40.The price of a bicycle is ₹3820. It goes up by 30%. What is the new price (in ₹)?

Answer key

  1. 25
  2. 690
  3. 12
  4. 5
  5. 30
  6. 1222
  7. 28
  8. 40
  9. 21
  10. 7080
  11. 5200
  12. 26.5
  13. 4680
  14. 9.75
  15. 1620
  16. 27.5
  17. 984
  18. 2002
  19. 846
  20. 38
  21. 1638
  22. 14
  23. 10
  24. 4641
  25. 828
  26. 180
  27. 52
  28. 65
  29. 2784
  30. 15
  31. 2055
  32. 62.5
  33. 15
  34. 12.5
  35. 36.25
  36. 26
  37. 1308
  38. 456
  39. 15
  40. 4966

Free quantitative aptitude lessons, practice and worksheets at talentjr.in/quantitative-aptitude