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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 881 · 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 price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  2. 2.The price of a school bag changes from ₹1920 to ₹1632. By what percent did it come down?
  3. 3.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  4. 4.The price of a school bag changes from ₹1120 to ₹840. By what percent did it come down?
  5. 5.The price of a school bag changes from ₹4660 to ₹6524. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹3520 to ₹3696. By what percent did it go up?
  7. 7.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  8. 8.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  9. 9.A town has 4040 people. Its population grows by 25%. How many people live there now?
  10. 10.A water tank holds 1240 litres. 20% of the water is used. How many litres are left?
  11. 11.The price of a bicycle is ₹2800. It goes up by 15%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹4980 to ₹4482. By what percent did it come down?
  13. 13.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  14. 14.A shop sells 620 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  15. 15.A town has 3500 people. Its population grows by 25%. How many people live there now?
  16. 16.The price of a school bag changes from ₹1000 to ₹950. By what percent did it come down?
  17. 17.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  18. 18.A water tank holds 3100 litres. 25% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹2780 to ₹3058. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹340 to ₹170. By what percent did it come down?
  21. 21.A town has 1840 people. Its population grows by 25%. How many people live there now?
  22. 22.The price of a bicycle is ₹2820. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹4400 to ₹5280. By what percent did it go up?
  24. 24.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  25. 25.A water tank holds 3800 litres. 25% of the water is used. How many litres are left?
  26. 26.A water tank holds 1440 litres. 40% of the water is used. How many litres are left?
  27. 27.The price of a bicycle is ₹660. It goes up by 30%. What is the new price (in ₹)?
  28. 28.A town has 2360 people. Its population grows by 30%. How many people live there now?
  29. 29.A shop sells 3360 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  30. 30.The price of a bicycle is ₹3680. It goes up by 15%. What is the new price (in ₹)?
  31. 31.The price of a bicycle is ₹640. It goes up by 5%. What is the new price (in ₹)?
  32. 32.The price of a school bag changes from ₹1360 to ₹1768. By what percent did it go up?
  33. 33.A water tank holds 620 litres. 25% of the water is used. How many litres are left?
  34. 34.A shop sells 620 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  35. 35.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  36. 36.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹4920 to ₹5412. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹1260 to ₹1008. By what percent did it come down?
  39. 39.A town has 3020 people. Its population grows by 20%. How many people live there now?
  40. 40.A shop sells 3060 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?

Answer key

  1. 75
  2. 15
  3. 27.75
  4. 25
  5. 40
  6. 5
  7. 12.5
  8. 55
  9. 5050
  10. 992
  11. 3220
  12. 10
  13. 2
  14. 682
  15. 4375
  16. 5
  17. 33
  18. 2325
  19. 10
  20. 50
  21. 2300
  22. 3102
  23. 20
  24. 46
  25. 2850
  26. 864
  27. 858
  28. 3068
  29. 4032
  30. 4232
  31. 672
  32. 30
  33. 465
  34. 744
  35. 60
  36. 87.5
  37. 10
  38. 20
  39. 3624
  40. 3978

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