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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 870 · 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 shop sells 3860 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  2. 2.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
  3. 3.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
  4. 4.The price of a bicycle is ₹200. It goes up by 15%. What is the new price (in ₹)?
  5. 5.The price of a school bag changes from ₹3920 to ₹5488. By what percent did it go up?
  6. 6.A water tank holds 920 litres. 20% of the water is used. How many litres are left?
  7. 7.The price of a bicycle is ₹2480. It goes up by 10%. What is the new price (in ₹)?
  8. 8.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  11. 11.A shop sells 800 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  12. 12.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.A shop sells 540 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  14. 14.A water tank holds 1580 litres. 15% of the water is used. How many litres are left?
  15. 15.A town has 4900 people. Its population grows by 15%. How many people live there now?
  16. 16.The price of a school bag changes from ₹2080 to ₹2288. By what percent did it go up?
  17. 17.The price of a school bag changes from ₹3220 to ₹3542. By what percent did it go up?
  18. 18.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  19. 19.A shop sells 2700 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  20. 20.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  21. 21.A water tank holds 3620 litres. 30% of the water is used. How many litres are left?
  22. 22.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  23. 23.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹2780 to ₹2085. By what percent did it come down?
  25. 25.A water tank holds 2380 litres. 15% of the water is used. How many litres are left?
  26. 26.A water tank holds 4020 litres. 30% of the water is used. How many litres are left?
  27. 27.A water tank holds 2760 litres. 5% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹2220 to ₹1887. By what percent did it come down?
  29. 29.A water tank holds 3000 litres. 15% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1720 to ₹2580. By what percent did it go up?
  31. 31.A water tank holds 1920 litres. 30% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹2800. It goes up by 10%. What is the new price (in ₹)?
  33. 33.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹3040 to ₹2736. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹4660 to ₹5126. By what percent did it go up?
  36. 36.A town has 1020 people. Its population grows by 5%. How many people live there now?
  37. 37.A shop sells 3360 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  38. 38.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  39. 39.A town has 2560 people. Its population grows by 20%. How many people live there now?
  40. 40.The price of a bicycle is ₹2260. It goes up by 20%. What is the new price (in ₹)?

Answer key

  1. 4825
  2. 19
  3. 40.5
  4. 230
  5. 40
  6. 736
  7. 2728
  8. 26.5
  9. 61
  10. 75
  11. 1120
  12. 54
  13. 810
  14. 1343
  15. 5635
  16. 10
  17. 10
  18. 57.5
  19. 3375
  20. 9.75
  21. 2534
  22. 12.5
  23. 80
  24. 25
  25. 2023
  26. 2814
  27. 2622
  28. 15
  29. 2550
  30. 50
  31. 1344
  32. 3080
  33. 43
  34. 10
  35. 10
  36. 1071
  37. 5040
  38. 10.5
  39. 3072
  40. 2712

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