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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 389 · 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 bicycle is ₹4980. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A shop sells 3520 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹200 to ₹100. By what percent did it come down?
  4. 4.A water tank holds 2880 litres. 30% of the water is used. How many litres are left?
  5. 5.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
  6. 6.A price goes up by 20% and then goes up by 20% more. By what percent has it gone up in all? =
  7. 7.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹3980 to ₹4776. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹1680 to ₹2352. By what percent did it go up?
  10. 10.A water tank holds 660 litres. 10% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹3440 to ₹4300. By what percent did it go up?
  12. 12.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹1820 to ₹2730. By what percent did it go up?
  14. 14.A water tank holds 3440 litres. 50% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹4480 to ₹3808. By what percent did it come down?
  16. 16.A water tank holds 4520 litres. 30% of the water is used. How many litres are left?
  17. 17.A water tank holds 1220 litres. 10% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹100 to ₹120. By what percent did it go up?
  19. 19.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  20. 20.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  21. 21.A town has 2620 people. Its population grows by 50%. How many people live there now?
  22. 22.A water tank holds 4420 litres. 20% of the water is used. How many litres are left?
  23. 23.A water tank holds 1260 litres. 30% of the water is used. How many litres are left?
  24. 24.The price of a bicycle is ₹3740. It goes up by 50%. What is the new price (in ₹)?
  25. 25.A town has 1100 people. Its population grows by 5%. How many people live there now?
  26. 26.A shop sells 600 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹1900 to ₹2280. By what percent did it go up?
  28. 28.A town has 1840 people. Its population grows by 5%. How many people live there now?
  29. 29.A water tank holds 2400 litres. 30% of the water is used. How many litres are left?
  30. 30.The price of a bicycle is ₹4300. It goes up by 15%. What is the new price (in ₹)?
  31. 31.The price of a bicycle is ₹1280. It goes up by 5%. What is the new price (in ₹)?
  32. 32.A water tank holds 1060 litres. 10% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹3340 to ₹4008. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹1600 to ₹1360. By what percent did it come down?
  35. 35.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 1240 litres. 5% of the water is used. How many litres are left?
  37. 37.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹1220 to ₹1403. By what percent did it go up?
  39. 39.A water tank holds 1160 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹2140 to ₹2996. By what percent did it go up?

Answer key

  1. 6225
  2. 4400
  3. 50
  4. 2016
  5. 23.5
  6. 44
  7. 38
  8. 20
  9. 40
  10. 594
  11. 25
  12. 8
  13. 50
  14. 1720
  15. 15
  16. 3164
  17. 1098
  18. 20
  19. 52.5
  20. 65
  21. 3930
  22. 3536
  23. 882
  24. 5610
  25. 1155
  26. 900
  27. 20
  28. 1932
  29. 1680
  30. 4945
  31. 1344
  32. 954
  33. 20
  34. 15
  35. 47
  36. 1178
  37. 24
  38. 15
  39. 696
  40. 40

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