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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 556 · 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 ₹2400 to ₹3360. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹4140 to ₹4554. By what percent did it go up?
  3. 3.The price of a bicycle is ₹2560. It goes up by 20%. What is the new price (in ₹)?
  4. 4.A water tank holds 1140 litres. 20% of the water is used. How many litres are left?
  5. 5.A town has 1060 people. Its population grows by 50%. How many people live there now?
  6. 6.The price of a school bag changes from ₹1060 to ₹848. By what percent did it come down?
  7. 7.A town has 4640 people. Its population grows by 20%. How many people live there now?
  8. 8.The price of a school bag changes from ₹3480 to ₹4002. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹2240 to ₹1680. By what percent did it come down?
  10. 10.A water tank holds 2580 litres. 30% of the water is used. How many litres are left?
  11. 11.A water tank holds 480 litres. 5% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹3440. It goes up by 40%. What is the new price (in ₹)?
  13. 13.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  14. 14.The price of a bicycle is ₹1420. It goes up by 15%. What is the new price (in ₹)?
  15. 15.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  16. 16.The price of a school bag changes from ₹3860 to ₹3667. By what percent did it come down?
  17. 17.The price of a bicycle is ₹3220. It goes up by 25%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹1820. It goes up by 20%. What is the new price (in ₹)?
  19. 19.A water tank holds 4500 litres. 50% of the water is used. How many litres are left?
  20. 20.A water tank holds 800 litres. 15% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹580. It goes up by 40%. What is the new price (in ₹)?
  22. 22.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  23. 23.A water tank holds 280 litres. 40% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹2880 to ₹1440. By what percent did it come down?
  25. 25.A water tank holds 1600 litres. 25% of the water is used. How many litres are left?
  26. 26.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹2940. It goes up by 10%. What is the new price (in ₹)?
  28. 28.The price of a school bag changes from ₹2760 to ₹2484. By what percent did it come down?
  29. 29.A shop sells 1100 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  30. 30.A water tank holds 1460 litres. 50% of the water is used. How many litres are left?
  31. 31.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹640 to ₹608. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹2780 to ₹3475. By what percent did it go up?
  34. 34.A water tank holds 2620 litres. 40% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹380 to ₹475. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹1800 to ₹1350. By what percent did it come down?
  37. 37.A water tank holds 2880 litres. 30% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹1300 to ₹1430. By what percent did it go up?
  39. 39.A shop sells 4960 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  40. 40.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =

Answer key

  1. 40
  2. 10
  3. 3072
  4. 912
  5. 1590
  6. 20
  7. 5568
  8. 15
  9. 25
  10. 1806
  11. 456
  12. 4816
  13. 62.5
  14. 1633
  15. 52.5
  16. 5
  17. 4025
  18. 2184
  19. 2250
  20. 680
  21. 812
  22. 37.5
  23. 168
  24. 50
  25. 1200
  26. 4.5
  27. 3234
  28. 10
  29. 1210
  30. 730
  31. 19.25
  32. 5
  33. 25
  34. 1572
  35. 25
  36. 25
  37. 2016
  38. 10
  39. 7440
  40. 27.5

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