← Percentage increase and decrease lesson New set →

Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 915 · 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 water tank holds 4540 litres. 30% of the water is used. How many litres are left?
  2. 2.A town has 4960 people. Its population grows by 5%. How many people live there now?
  3. 3.The price of a bicycle is ₹1520. It goes up by 5%. What is the new price (in ₹)?
  4. 4.A shop sells 4380 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹660 to ₹726. By what percent did it go up?
  6. 6.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹2240 to ₹1792. By what percent did it come down?
  8. 8.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  9. 9.A town has 1640 people. Its population grows by 5%. How many people live there now?
  10. 10.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹860 to ₹1032. By what percent did it go up?
  12. 12.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  13. 13.A water tank holds 4940 litres. 5% of the water is used. How many litres are left?
  14. 14.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  15. 15.A water tank holds 2480 litres. 20% of the water is used. How many litres are left?
  16. 16.A water tank holds 360 litres. 15% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹1720. It goes up by 5%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹3420. It goes up by 40%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹1600 to ₹960. By what percent did it come down?
  20. 20.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹2100. It goes up by 25%. What is the new price (in ₹)?
  22. 22.A water tank holds 2200 litres. 5% of the water is used. How many litres are left?
  23. 23.A town has 3000 people. Its population grows by 30%. How many people live there now?
  24. 24.The price of a school bag changes from ₹400 to ₹380. By what percent did it come down?
  25. 25.A water tank holds 1020 litres. 50% of the water is used. How many litres are left?
  26. 26.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹840 to ₹630. By what percent did it come down?
  28. 28.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  29. 29.The price of a school bag changes from ₹1160 to ₹1044. By what percent did it come down?
  30. 30.A town has 2520 people. Its population grows by 10%. How many people live there now?
  31. 31.The price of a bicycle is ₹1220. It goes up by 30%. What is the new price (in ₹)?
  32. 32.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  33. 33.The price of a school bag changes from ₹1660 to ₹1577. By what percent did it come down?
  34. 34.A water tank holds 3200 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 120 litres. 10% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹1240 to ₹930. By what percent did it come down?
  37. 37.A shop sells 3640 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹2360 to ₹3540. By what percent did it go up?
  39. 39.A shop sells 1360 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  40. 40.A water tank holds 1500 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 3178
  2. 5208
  3. 1596
  4. 5256
  5. 10
  6. 28.75
  7. 20
  8. 2
  9. 1722
  10. 35
  11. 20
  12. 26
  13. 4693
  14. 57.5
  15. 1984
  16. 306
  17. 1806
  18. 4788
  19. 40
  20. 32
  21. 2625
  22. 2090
  23. 3900
  24. 5
  25. 510
  26. 20.75
  27. 25
  28. 19.25
  29. 10
  30. 2772
  31. 1586
  32. 40.5
  33. 5
  34. 1920
  35. 108
  36. 25
  37. 5460
  38. 50
  39. 2040
  40. 1200

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