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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 181 · 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 1520 litres. 10% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹2660 to ₹1596. By what percent did it come down?
  3. 3.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  4. 4.The price of a bicycle is ₹2640. It goes up by 10%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹1140 to ₹1197. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹2400 to ₹1680. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹2440 to ₹2562. By what percent did it go up?
  8. 8.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  9. 9.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  10. 10.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  11. 11.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  12. 12.A water tank holds 1060 litres. 5% of the water is used. How many litres are left?
  13. 13.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  14. 14.A town has 2400 people. Its population grows by 50%. How many people live there now?
  15. 15.The price of a school bag changes from ₹2380 to ₹2499. By what percent did it go up?
  16. 16.The price of a bicycle is ₹4980. It goes up by 25%. What is the new price (in ₹)?
  17. 17.A town has 1660 people. Its population grows by 40%. How many people live there now?
  18. 18.A shop sells 4100 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  19. 19.The price of a school bag changes from ₹1480 to ₹1332. By what percent did it come down?
  20. 20.A town has 1480 people. Its population grows by 50%. How many people live there now?
  21. 21.The price of a bicycle is ₹3760. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹4180 to ₹2090. By what percent did it come down?
  24. 24.A water tank holds 3800 litres. 50% of the water is used. How many litres are left?
  25. 25.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  26. 26.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
  27. 27.A water tank holds 4320 litres. 50% of the water is used. How many litres are left?
  28. 28.A shop sells 1120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  29. 29.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 4360 litres. 40% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹4540. It goes up by 30%. What is the new price (in ₹)?
  32. 32.The price of a bicycle is ₹320. It goes up by 10%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹1940 to ₹2134. By what percent did it go up?
  34. 34.A water tank holds 4380 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 1820 litres. 25% of the water is used. How many litres are left?
  36. 36.A shop sells 3280 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  37. 37.A water tank holds 2900 litres. 20% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹440 to ₹220. By what percent did it come down?
  39. 39.A shop sells 280 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  40. 40.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =

Answer key

  1. 1368
  2. 40
  3. 32.5
  4. 2904
  5. 5
  6. 30
  7. 5
  8. 43
  9. 10.5
  10. 95
  11. 72.5
  12. 1007
  13. 57.5
  14. 3600
  15. 5
  16. 6225
  17. 2324
  18. 5125
  19. 10
  20. 2220
  21. 4512
  22. 125
  23. 50
  24. 1900
  25. 26.5
  26. 26
  27. 2160
  28. 1400
  29. 26
  30. 2616
  31. 5902
  32. 352
  33. 10
  34. 2628
  35. 1365
  36. 3772
  37. 2320
  38. 50
  39. 392
  40. 3.5

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