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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 127 · 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 3460 litres. 10% of the water is used. How many litres are left?
  2. 2.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  3. 3.A water tank holds 1340 litres. 5% of the water is used. How many litres are left?
  4. 4.A water tank holds 3720 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a bicycle is ₹2500. It goes up by 10%. What is the new price (in ₹)?
  6. 6.The price of a bicycle is ₹3400. It goes up by 50%. What is the new price (in ₹)?
  7. 7.A water tank holds 2740 litres. 5% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹1900 to ₹1425. By what percent did it come down?
  9. 9.A town has 3920 people. Its population grows by 30%. How many people live there now?
  10. 10.The price of a school bag changes from ₹640 to ₹384. By what percent did it come down?
  11. 11.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹3500 to ₹3150. By what percent did it come down?
  13. 13.A shop sells 4660 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.The price of a school bag changes from ₹1320 to ₹1650. By what percent did it go up?
  15. 15.The price of a bicycle is ₹1420. It goes up by 5%. What is the new price (in ₹)?
  16. 16.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  17. 17.The price of a school bag changes from ₹2560 to ₹1536. By what percent did it come down?
  18. 18.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.The price of a school bag changes from ₹3760 to ₹3008. By what percent did it come down?
  20. 20.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  21. 21.A town has 4700 people. Its population grows by 5%. How many people live there now?
  22. 22.A town has 1000 people. Its population grows by 15%. How many people live there now?
  23. 23.The price of a school bag changes from ₹3380 to ₹3549. By what percent did it go up?
  24. 24.A shop sells 2820 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  25. 25.A water tank holds 1240 litres. 25% of the water is used. How many litres are left?
  26. 26.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  27. 27.A water tank holds 800 litres. 20% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹3980 to ₹2388. By what percent did it come down?
  29. 29.A town has 500 people. Its population grows by 40%. How many people live there now?
  30. 30.The price of a school bag changes from ₹4980 to ₹2988. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹2560 to ₹2944. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹2700 to ₹3375. By what percent did it go up?
  33. 33.A town has 4760 people. Its population grows by 5%. How many people live there now?
  34. 34.A water tank holds 2120 litres. 40% of the water is used. How many litres are left?
  35. 35.A water tank holds 3700 litres. 10% of the water is used. How many litres are left?
  36. 36.A water tank holds 1340 litres. 20% of the water is used. How many litres are left?
  37. 37.A water tank holds 2620 litres. 10% of the water is used. How many litres are left?
  38. 38.The price of a school bag changes from ₹4880 to ₹3416. By what percent did it come down?
  39. 39.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  40. 40.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =

Answer key

  1. 3114
  2. 18.75
  3. 1273
  4. 2976
  5. 2750
  6. 5100
  7. 2603
  8. 25
  9. 5096
  10. 40
  11. 58
  12. 10
  13. 5126
  14. 25
  15. 1491
  16. 54
  17. 40
  18. 82
  19. 20
  20. 6.25
  21. 4935
  22. 1150
  23. 5
  24. 3243
  25. 930
  26. 70
  27. 640
  28. 40
  29. 700
  30. 40
  31. 15
  32. 25
  33. 4998
  34. 1272
  35. 3330
  36. 1072
  37. 2358
  38. 30
  39. 10.25
  40. 36.25

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