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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 302 · 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 bicycle is ₹2360. It goes up by 30%. What is the new price (in ₹)?
  2. 2.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  3. 3.The price of a bicycle is ₹2340. It goes up by 20%. What is the new price (in ₹)?
  4. 4.The price of a school bag changes from ₹4440 to ₹5106. By what percent did it go up?
  5. 5.A town has 4460 people. Its population grows by 5%. How many people live there now?
  6. 6.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  7. 7.A water tank holds 4260 litres. 30% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹1860 to ₹2046. By what percent did it go up?
  9. 9.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  10. 10.A water tank holds 4860 litres. 10% of the water is used. How many litres are left?
  11. 11.A shop sells 3740 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  12. 12.A town has 2980 people. Its population grows by 5%. How many people live there now?
  13. 13.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 3680 litres. 40% of the water is used. How many litres are left?
  15. 15.A water tank holds 1460 litres. 40% of the water is used. How many litres are left?
  16. 16.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.The price of a school bag changes from ₹4200 to ₹2940. By what percent did it come down?
  18. 18.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  19. 19.The price of a school bag changes from ₹1500 to ₹750. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹3200 to ₹3840. By what percent did it go up?
  21. 21.A shop sells 560 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  22. 22.The price of a school bag changes from ₹3520 to ₹3696. By what percent did it go up?
  23. 23.The price of a bicycle is ₹4300. It goes up by 5%. What is the new price (in ₹)?
  24. 24.The price of a school bag changes from ₹3220 to ₹3703. By what percent did it go up?
  25. 25.A water tank holds 4860 litres. 50% of the water is used. How many litres are left?
  26. 26.A water tank holds 4400 litres. 50% of the water is used. How many litres are left?
  27. 27.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  28. 28.A water tank holds 140 litres. 40% of the water is used. How many litres are left?
  29. 29.The price of a school bag changes from ₹3720 to ₹4650. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹2220 to ₹1332. By what percent did it come down?
  31. 31.The price of a school bag changes from ₹2920 to ₹2336. By what percent did it come down?
  32. 32.A water tank holds 4220 litres. 30% of the water is used. How many litres are left?
  33. 33.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  34. 34.A town has 4640 people. Its population grows by 25%. How many people live there now?
  35. 35.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹3140. It goes up by 50%. What is the new price (in ₹)?
  37. 37.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  38. 38.A town has 3900 people. Its population grows by 30%. How many people live there now?
  39. 39.A water tank holds 1940 litres. 25% of the water is used. How many litres are left?
  40. 40.A shop sells 3360 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?

Answer key

  1. 3068
  2. 51
  3. 2808
  4. 15
  5. 4683
  6. 70
  7. 2982
  8. 10
  9. 20
  10. 4374
  11. 4301
  12. 3129
  13. 72.5
  14. 2208
  15. 876
  16. 46
  17. 30
  18. 28.75
  19. 50
  20. 20
  21. 840
  22. 5
  23. 4515
  24. 15
  25. 2430
  26. 2200
  27. 43
  28. 84
  29. 25
  30. 40
  31. 20
  32. 2954
  33. 60
  34. 5800
  35. 19
  36. 4710
  37. 17
  38. 5070
  39. 1455
  40. 3864

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