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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 387 · 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 4760 litres. 15% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹720 to ₹540. By what percent did it come down?
  3. 3.A water tank holds 960 litres. 5% of the water is used. How many litres are left?
  4. 4.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  5. 5.A town has 2640 people. Its population grows by 50%. How many people live there now?
  6. 6.The price of a bicycle is ₹2500. It goes up by 15%. What is the new price (in ₹)?
  7. 7.The price of a school bag changes from ₹860 to ₹903. By what percent did it go up?
  8. 8.A water tank holds 1220 litres. 25% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹1880 to ₹2068. By what percent did it go up?
  10. 10.The price of a bicycle is ₹3060. It goes up by 40%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹1240 to ₹1736. By what percent did it go up?
  12. 12.A water tank holds 600 litres. 30% of the water is used. How many litres are left?
  13. 13.A water tank holds 4480 litres. 40% of the water is used. How many litres are left?
  14. 14.A shop sells 2140 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  15. 15.The price of a school bag changes from ₹1700 to ₹850. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹820 to ₹410. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹780 to ₹858. By what percent did it go up?
  18. 18.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  19. 19.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A town has 2160 people. Its population grows by 40%. How many people live there now?
  22. 22.The price of a school bag changes from ₹3020 to ₹1510. By what percent did it come down?
  23. 23.A water tank holds 3200 litres. 15% of the water is used. How many litres are left?
  24. 24.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹1360 to ₹1156. By what percent did it come down?
  26. 26.A water tank holds 4320 litres. 15% of the water is used. How many litres are left?
  27. 27.The price of a bicycle is ₹4920. It goes up by 25%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹1380 to ₹1242. By what percent did it come down?
  29. 29.A town has 480 people. Its population grows by 5%. How many people live there now?
  30. 30.A water tank holds 1960 litres. 5% of the water is used. How many litres are left?
  31. 31.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹1880 to ₹1786. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹2380 to ₹2975. By what percent did it go up?
  34. 34.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  35. 35.A water tank holds 3820 litres. 15% of the water is used. How many litres are left?
  36. 36.The price of a school bag changes from ₹3920 to ₹5096. By what percent did it go up?
  37. 37.The price of a bicycle is ₹3340. It goes up by 5%. What is the new price (in ₹)?
  38. 38.A shop sells 3920 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹2260 to ₹2938. By what percent did it go up?
  40. 40.A water tank holds 1560 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 4046
  2. 25
  3. 912
  4. 47.5
  5. 3960
  6. 2875
  7. 5
  8. 915
  9. 10
  10. 4284
  11. 40
  12. 420
  13. 2688
  14. 2675
  15. 50
  16. 50
  17. 10
  18. 60
  19. 31.25
  20. 47
  21. 3024
  22. 50
  23. 2720
  24. 27.5
  25. 15
  26. 3672
  27. 6150
  28. 10
  29. 504
  30. 1862
  31. 52.5
  32. 5
  33. 25
  34. 61
  35. 3247
  36. 30
  37. 3507
  38. 4900
  39. 30
  40. 936

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