← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 980 · 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 50% and then comes down by 50% more. By what percent has it come down in all? =
  2. 2.The price of a bicycle is ₹4260. It goes up by 5%. What is the new price (in ₹)?
  3. 3.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  4. 4.The price of a school bag changes from ₹4260 to ₹5964. By what percent did it go up?
  5. 5.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  6. 6.The price of a bicycle is ₹1140. It goes up by 20%. What is the new price (in ₹)?
  7. 7.A shop sells 2000 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  8. 8.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  9. 9.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  10. 10.The price of a bicycle is ₹980. It goes up by 50%. What is the new price (in ₹)?
  11. 11.A water tank holds 4640 litres. 25% of the water is used. How many litres are left?
  12. 12.A water tank holds 2540 litres. 40% of the water is used. How many litres are left?
  13. 13.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  14. 14.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  15. 15.A town has 2540 people. Its population grows by 15%. How many people live there now?
  16. 16.The price of a school bag changes from ₹3140 to ₹4082. By what percent did it go up?
  17. 17.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  18. 18.A water tank holds 4020 litres. 30% of the water is used. How many litres are left?
  19. 19.A shop sells 3960 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  20. 20.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  21. 21.The price of a school bag changes from ₹4140 to ₹5382. By what percent did it go up?
  22. 22.A water tank holds 840 litres. 30% of the water is used. How many litres are left?
  23. 23.A town has 1000 people. Its population grows by 15%. How many people live there now?
  24. 24.A water tank holds 1180 litres. 25% of the water is used. How many litres are left?
  25. 25.A water tank holds 660 litres. 50% of the water is used. How many litres are left?
  26. 26.A water tank holds 3580 litres. 10% of the water is used. How many litres are left?
  27. 27.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹4780 to ₹4541. By what percent did it come down?
  29. 29.A town has 3580 people. Its population grows by 5%. How many people live there now?
  30. 30.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  31. 31.A water tank holds 3180 litres. 50% of the water is used. How many litres are left?
  32. 32.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  33. 33.The price of a school bag changes from ₹4220 to ₹2532. By what percent did it come down?
  34. 34.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹4360 to ₹5668. By what percent did it go up?
  37. 37.The price of a school bag changes from ₹3400 to ₹3910. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹1180 to ₹1534. By what percent did it go up?
  39. 39.A water tank holds 220 litres. 20% of the water is used. How many litres are left?
  40. 40.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =

Answer key

  1. 75
  2. 4473
  3. 2
  4. 40
  5. 87.5
  6. 1368
  7. 2400
  8. 37.5
  9. 58
  10. 1470
  11. 3480
  12. 1524
  13. 44
  14. 37
  15. 2921
  16. 30
  17. 26.5
  18. 2814
  19. 4158
  20. 82
  21. 30
  22. 588
  23. 1150
  24. 885
  25. 330
  26. 3222
  27. 61
  28. 5
  29. 3759
  30. 8
  31. 1590
  32. 15.5
  33. 40
  34. 54
  35. 12
  36. 30
  37. 15
  38. 30
  39. 176
  40. 20.75

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