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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 785 · 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 price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹3220 to ₹2898. By what percent did it come down?
  3. 3.The price of a bicycle is ₹1100. It goes up by 15%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹160 to ₹136. By what percent did it come down?
  5. 5.A water tank holds 3140 litres. 40% of the water is used. How many litres are left?
  6. 6.A shop sells 2840 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹1480 to ₹1332. By what percent did it come down?
  8. 8.A water tank holds 4300 litres. 15% of the water is used. How many litres are left?
  9. 9.A water tank holds 4300 litres. 30% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹620 to ₹465. By what percent did it come down?
  11. 11.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹3660 to ₹2928. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹360 to ₹378. By what percent did it go up?
  14. 14.The price of a bicycle is ₹2000. It goes up by 15%. What is the new price (in ₹)?
  15. 15.The price of a school bag changes from ₹3760 to ₹3948. By what percent did it go up?
  16. 16.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  17. 17.A water tank holds 1560 litres. 5% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹3680. It goes up by 30%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹4660 to ₹5825. By what percent did it go up?
  20. 20.A water tank holds 180 litres. 10% of the water is used. How many litres are left?
  21. 21.A shop sells 3480 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹3660. It goes up by 40%. What is the new price (in ₹)?
  23. 23.A water tank holds 1840 litres. 20% of the water is used. How many litres are left?
  24. 24.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  25. 25.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹560 to ₹840. By what percent did it go up?
  27. 27.A water tank holds 3800 litres. 20% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹3840 to ₹4800. By what percent did it go up?
  29. 29.A town has 800 people. Its population grows by 20%. How many people live there now?
  30. 30.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  31. 31.A water tank holds 1240 litres. 10% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹2180. It goes up by 20%. What is the new price (in ₹)?
  33. 33.A town has 4220 people. Its population grows by 10%. How many people live there now?
  34. 34.A water tank holds 4220 litres. 30% of the water is used. How many litres are left?
  35. 35.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  36. 36.A water tank holds 2860 litres. 20% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹1920 to ₹960. By what percent did it come down?
  38. 38.A water tank holds 1540 litres. 25% of the water is used. How many litres are left?
  39. 39.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  40. 40.A shop sells 2960 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

Answer key

  1. 14.5
  2. 10
  3. 1265
  4. 15
  5. 1884
  6. 3408
  7. 10
  8. 3655
  9. 3010
  10. 25
  11. 33
  12. 20
  13. 5
  14. 2300
  15. 5
  16. 43.75
  17. 1482
  18. 4784
  19. 25
  20. 162
  21. 4524
  22. 5124
  23. 1472
  24. 32.5
  25. 61
  26. 50
  27. 3040
  28. 25
  29. 960
  30. 8
  31. 1116
  32. 2616
  33. 4642
  34. 2954
  35. 72.5
  36. 2288
  37. 50
  38. 1155
  39. 5
  40. 3552

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