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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 444 · 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.

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  1. 1.A shop sells 3600 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  2. 2.A water tank holds 60 litres. 30% of the water is used. How many litres are left?
  3. 3.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹4060 to ₹5075. By what percent did it go up?
  5. 5.The price of a bicycle is ₹2260. It goes up by 40%. What is the new price (in ₹)?
  6. 6.The price of a school bag changes from ₹2560 to ₹3072. By what percent did it go up?
  7. 7.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 1880 litres. 40% of the water is used. How many litres are left?
  9. 9.The price of a bicycle is ₹2380. It goes up by 30%. What is the new price (in ₹)?
  10. 10.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  11. 11.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹2640 to ₹2904. By what percent did it go up?
  13. 13.A water tank holds 2420 litres. 20% of the water is used. How many litres are left?
  14. 14.The price of a school bag changes from ₹2740 to ₹3288. By what percent did it go up?
  15. 15.The price of a school bag changes from ₹120 to ₹138. By what percent did it go up?
  16. 16.A shop sells 4780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  17. 17.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  18. 18.A town has 3020 people. Its population grows by 40%. How many people live there now?
  19. 19.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  20. 20.The price of a bicycle is ₹860. It goes up by 25%. What is the new price (in ₹)?
  21. 21.A water tank holds 4040 litres. 15% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹2380 to ₹2618. By what percent did it go up?
  23. 23.The price of a school bag changes from ₹4780 to ₹5497. By what percent did it go up?
  24. 24.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  25. 25.A town has 4300 people. Its population grows by 5%. How many people live there now?
  26. 26.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  27. 27.The price of a school bag changes from ₹940 to ₹470. By what percent did it come down?
  28. 28.The price of a bicycle is ₹1180. It goes up by 40%. What is the new price (in ₹)?
  29. 29.A town has 2520 people. Its population grows by 10%. How many people live there now?
  30. 30.The price of a school bag changes from ₹1240 to ₹1116. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹1160 to ₹870. By what percent did it come down?
  32. 32.A water tank holds 3300 litres. 15% of the water is used. How many litres are left?
  33. 33.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  34. 34.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  35. 35.The price of a school bag changes from ₹1640 to ₹1476. By what percent did it come down?
  36. 36.A town has 4240 people. Its population grows by 15%. How many people live there now?
  37. 37.A shop sells 3220 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.A water tank holds 380 litres. 30% of the water is used. How many litres are left?
  39. 39.The price of a school bag changes from ₹4580 to ₹6870. By what percent did it go up?
  40. 40.The price of a bicycle is ₹1340. It goes up by 15%. What is the new price (in ₹)?

Answer key

  1. 5040
  2. 42
  3. 40
  4. 25
  5. 3164
  6. 20
  7. 43.75
  8. 1128
  9. 3094
  10. 61
  11. 75
  12. 10
  13. 1936
  14. 20
  15. 15
  16. 5019
  17. 10.5
  18. 4228
  19. 33.5
  20. 1075
  21. 3434
  22. 10
  23. 15
  24. 37
  25. 4515
  26. 36.5
  27. 50
  28. 1652
  29. 2772
  30. 10
  31. 25
  32. 2805
  33. 36.5
  34. 69
  35. 10
  36. 4876
  37. 4508
  38. 266
  39. 50
  40. 1541

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