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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 273 · 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.The price of a school bag changes from ₹3660 to ₹2562. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹1640 to ₹2296. By what percent did it go up?
  3. 3.A town has 4140 people. Its population grows by 5%. How many people live there now?
  4. 4.The price of a school bag changes from ₹2000 to ₹2500. By what percent did it go up?
  5. 5.The price of a bicycle is ₹4580. It goes up by 20%. What is the new price (in ₹)?
  6. 6.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  7. 7.A town has 2540 people. Its population grows by 5%. How many people live there now?
  8. 8.A water tank holds 4420 litres. 20% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹3500 to ₹2800. By what percent did it come down?
  10. 10.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  12. 12.A town has 4660 people. Its population grows by 20%. How many people live there now?
  13. 13.A water tank holds 1100 litres. 25% of the water is used. How many litres are left?
  14. 14.A water tank holds 1460 litres. 40% of the water is used. How many litres are left?
  15. 15.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  16. 16.A shop sells 500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  17. 17.A water tank holds 2000 litres. 25% of the water is used. How many litres are left?
  18. 18.A shop sells 2960 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  19. 19.The price of a school bag changes from ₹2380 to ₹2023. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹3200 to ₹3520. By what percent did it go up?
  21. 21.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  22. 22.A water tank holds 3580 litres. 10% of the water is used. How many litres are left?
  23. 23.A town has 1080 people. Its population grows by 5%. How many people live there now?
  24. 24.A town has 300 people. Its population grows by 20%. How many people live there now?
  25. 25.A shop sells 1420 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  26. 26.A water tank holds 880 litres. 40% of the water is used. How many litres are left?
  27. 27.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  28. 28.A water tank holds 580 litres. 10% of the water is used. How many litres are left?
  29. 29.A town has 660 people. Its population grows by 40%. How many people live there now?
  30. 30.The price of a bicycle is ₹3900. It goes up by 15%. What is the new price (in ₹)?
  31. 31.A water tank holds 3200 litres. 40% of the water is used. How many litres are left?
  32. 32.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  33. 33.A water tank holds 4460 litres. 20% of the water is used. How many litres are left?
  34. 34.A town has 2700 people. Its population grows by 10%. How many people live there now?
  35. 35.The price of a school bag changes from ₹4260 to ₹2556. By what percent did it come down?
  36. 36.A water tank holds 1380 litres. 5% of the water is used. How many litres are left?
  37. 37.A water tank holds 4480 litres. 30% of the water is used. How many litres are left?
  38. 38.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹3800 to ₹4560. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹2020 to ₹1515. By what percent did it come down?

Answer key

  1. 30
  2. 40
  3. 4347
  4. 25
  5. 5496
  6. 20.75
  7. 2667
  8. 3536
  9. 20
  10. 43.75
  11. 32.5
  12. 5592
  13. 825
  14. 876
  15. 58
  16. 550
  17. 1500
  18. 3256
  19. 15
  20. 10
  21. 49
  22. 3222
  23. 1134
  24. 360
  25. 1491
  26. 528
  27. 15.5
  28. 522
  29. 924
  30. 4485
  31. 1920
  32. 43
  33. 3568
  34. 2970
  35. 40
  36. 1311
  37. 3136
  38. 68
  39. 20
  40. 25

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