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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 86 · 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 ₹2960 to ₹4144. By what percent did it go up?
  2. 2.The price of a bicycle is ₹380. It goes up by 25%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹2160 to ₹1080. By what percent did it come down?
  4. 4.A water tank holds 2060 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹3440. It goes up by 25%. What is the new price (in ₹)?
  6. 6.The price of a bicycle is ₹880. It goes up by 40%. What is the new price (in ₹)?
  7. 7.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹600 to ₹660. By what percent did it go up?
  9. 9.A water tank holds 100 litres. 30% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹1920. It goes up by 25%. What is the new price (in ₹)?
  11. 11.The price of a school bag changes from ₹1400 to ₹1960. By what percent did it go up?
  12. 12.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  13. 13.A town has 500 people. Its population grows by 15%. How many people live there now?
  14. 14.A shop sells 4660 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  15. 15.The price of a school bag changes from ₹1920 to ₹2880. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹2280 to ₹1938. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹360 to ₹540. By what percent did it go up?
  18. 18.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹3520 to ₹4224. By what percent did it go up?
  20. 20.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 3780 litres. 40% of the water is used. How many litres are left?
  22. 22.A shop sells 1400 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  23. 23.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  25. 25.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹520 to ₹312. By what percent did it come down?
  27. 27.A shop sells 3220 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹2040 to ₹2142. By what percent did it go up?
  29. 29.A water tank holds 4400 litres. 40% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹2640 to ₹2376. By what percent did it come down?
  31. 31.A water tank holds 1460 litres. 40% of the water is used. How many litres are left?
  32. 32.A town has 60 people. Its population grows by 20%. How many people live there now?
  33. 33.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹260 to ₹195. By what percent did it come down?
  35. 35.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  36. 36.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  37. 37.The price of a school bag changes from ₹2940 to ₹3528. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹2220 to ₹2664. By what percent did it go up?
  39. 39.A water tank holds 760 litres. 30% of the water is used. How many litres are left?
  40. 40.A water tank holds 840 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 40
  2. 475
  3. 50
  4. 1442
  5. 4300
  6. 1232
  7. 32
  8. 10
  9. 70
  10. 2400
  11. 40
  12. 42.5
  13. 575
  14. 5592
  15. 50
  16. 15
  17. 50
  18. 19
  19. 20
  20. 54
  21. 2268
  22. 1750
  23. 49.5
  24. 96
  25. 125
  26. 40
  27. 3703
  28. 5
  29. 2640
  30. 10
  31. 876
  32. 72
  33. 75
  34. 25
  35. 33.5
  36. 46
  37. 20
  38. 20
  39. 532
  40. 630

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