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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 337 · 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 town has 4660 people. Its population grows by 20%. How many people live there now?
  2. 2.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  3. 3.A town has 1720 people. Its population grows by 20%. How many people live there now?
  4. 4.The price of a bicycle is ₹2620. It goes up by 5%. What is the new price (in ₹)?
  5. 5.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  6. 6.The price of a school bag changes from ₹580 to ₹551. By what percent did it come down?
  7. 7.A water tank holds 4260 litres. 40% of the water is used. How many litres are left?
  8. 8.A price comes down by 40% and then comes down by 25% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹1300 to ₹1950. By what percent did it go up?
  10. 10.A town has 4760 people. Its population grows by 40%. How many people live there now?
  11. 11.The price of a bicycle is ₹1020. It goes up by 50%. What is the new price (in ₹)?
  12. 12.A water tank holds 1520 litres. 30% of the water is used. How many litres are left?
  13. 13.A shop sells 3140 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  14. 14.A water tank holds 2500 litres. 30% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹1080 to ₹810. By what percent did it come down?
  16. 16.The price of a school bag changes from ₹1880 to ₹1786. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹840 to ₹882. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹3460 to ₹2076. By what percent did it come down?
  19. 19.The price of a bicycle is ₹3280. It goes up by 25%. What is the new price (in ₹)?
  20. 20.A water tank holds 1560 litres. 25% of the water is used. How many litres are left?
  21. 21.A water tank holds 3440 litres. 5% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹1080 to ₹1296. By what percent did it go up?
  23. 23.A water tank holds 980 litres. 5% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹4060 to ₹5684. By what percent did it go up?
  25. 25.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  26. 26.The price of a bicycle is ₹120. It goes up by 50%. What is the new price (in ₹)?
  27. 27.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  28. 28.A town has 360 people. Its population grows by 30%. How many people live there now?
  29. 29.The price of a school bag changes from ₹4640 to ₹5800. By what percent did it go up?
  30. 30.A water tank holds 4760 litres. 10% of the water is used. How many litres are left?
  31. 31.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  32. 32.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  33. 33.A town has 2700 people. Its population grows by 5%. How many people live there now?
  34. 34.A water tank holds 400 litres. 40% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹2420 to ₹2662. By what percent did it go up?
  36. 36.The price of a bicycle is ₹4200. It goes up by 40%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹2820 to ₹2115. By what percent did it come down?
  38. 38.A water tank holds 1060 litres. 25% of the water is used. How many litres are left?
  39. 39.A town has 2140 people. Its population grows by 10%. How many people live there now?
  40. 40.A town has 1960 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 5592
  2. 9.75
  3. 2064
  4. 2751
  5. 19.25
  6. 5
  7. 2556
  8. 55
  9. 50
  10. 6664
  11. 1530
  12. 1064
  13. 3454
  14. 1750
  15. 25
  16. 5
  17. 5
  18. 40
  19. 4100
  20. 1170
  21. 3268
  22. 20
  23. 931
  24. 40
  25. 82
  26. 180
  27. 28.75
  28. 468
  29. 25
  30. 4284
  31. 56.25
  32. 36.5
  33. 2835
  34. 240
  35. 10
  36. 5880
  37. 25
  38. 795
  39. 2354
  40. 2254

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