← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 433 · 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 ₹280 to ₹308. By what percent did it go up?
  2. 2.The price of a bicycle is ₹2740. It goes up by 30%. What is the new price (in ₹)?
  3. 3.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  4. 4.A shop sells 640 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.The price of a bicycle is ₹1360. It goes up by 10%. What is the new price (in ₹)?
  6. 6.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  7. 7.The price of a school bag changes from ₹3840 to ₹2880. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹4580 to ₹5038. By what percent did it go up?
  9. 9.The price of a bicycle is ₹1640. It goes up by 30%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹1060 to ₹848. By what percent did it come down?
  11. 11.A water tank holds 1880 litres. 20% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹4160. It goes up by 5%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹1700 to ₹2040. By what percent did it go up?
  14. 14.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  15. 15.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  16. 16.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  17. 17.A water tank holds 2080 litres. 25% of the water is used. How many litres are left?
  18. 18.A water tank holds 2740 litres. 20% of the water is used. How many litres are left?
  19. 19.A water tank holds 4360 litres. 25% of the water is used. How many litres are left?
  20. 20.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
  21. 21.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  22. 22.A town has 3060 people. Its population grows by 5%. How many people live there now?
  23. 23.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  24. 24.The price of a bicycle is ₹2220. It goes up by 20%. What is the new price (in ₹)?
  25. 25.A town has 3480 people. Its population grows by 5%. How many people live there now?
  26. 26.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.A water tank holds 1300 litres. 30% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹1360 to ₹1156. By what percent did it come down?
  29. 29.The price of a bicycle is ₹3360. It goes up by 50%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹60. It goes up by 5%. What is the new price (in ₹)?
  31. 31.A water tank holds 2640 litres. 20% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹2540. It goes up by 15%. What is the new price (in ₹)?
  33. 33.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  34. 34.The price of a bicycle is ₹3320. It goes up by 25%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹500 to ₹550. By what percent did it go up?
  36. 36.A water tank holds 420 litres. 15% of the water is used. How many litres are left?
  37. 37.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.A town has 480 people. Its population grows by 25%. How many people live there now?
  39. 39.A water tank holds 3900 litres. 40% of the water is used. How many litres are left?
  40. 40.A water tank holds 1820 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 10
  2. 3562
  3. 36.5
  4. 704
  5. 1496
  6. 20.75
  7. 25
  8. 10
  9. 2132
  10. 20
  11. 1504
  12. 4368
  13. 20
  14. 26.5
  15. 43.75
  16. 5
  17. 1560
  18. 2192
  19. 3270
  20. 65
  21. 43
  22. 3213
  23. 50
  24. 2664
  25. 3654
  26. 9.25
  27. 910
  28. 15
  29. 5040
  30. 63
  31. 2112
  32. 2921
  33. 42.5
  34. 4150
  35. 10
  36. 357
  37. 57.5
  38. 600
  39. 2340
  40. 1365

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