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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 264 · 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 ₹1500 to ₹1050. By what percent did it come down?
  2. 2.A water tank holds 3480 litres. 50% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹3120 to ₹3900. By what percent did it go up?
  4. 4.A shop sells 4620 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  5. 5.The price of a school bag changes from ₹4400 to ₹5720. By what percent did it go up?
  6. 6.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  7. 7.A water tank holds 3900 litres. 10% of the water is used. How many litres are left?
  8. 8.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  9. 9.A water tank holds 3900 litres. 15% of the water is used. How many litres are left?
  10. 10.A town has 2000 people. Its population grows by 15%. How many people live there now?
  11. 11.The price of a school bag changes from ₹2420 to ₹2299. By what percent did it come down?
  12. 12.A shop sells 2300 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  13. 13.A water tank holds 3280 litres. 15% of the water is used. How many litres are left?
  14. 14.A water tank holds 4140 litres. 25% of the water is used. How many litres are left?
  15. 15.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  16. 16.A shop sells 680 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  17. 17.A water tank holds 960 litres. 10% of the water is used. How many litres are left?
  18. 18.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  19. 19.A town has 4780 people. Its population grows by 40%. How many people live there now?
  20. 20.The price of a school bag changes from ₹3800 to ₹4560. By what percent did it go up?
  21. 21.A price comes down by 30% and then comes down by 40% more. By what percent has it come down in all? =
  22. 22.The price of a school bag changes from ₹1380 to ₹1932. By what percent did it go up?
  23. 23.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  24. 24.The price of a bicycle is ₹4920. It goes up by 5%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹1760 to ₹1936. By what percent did it go up?
  26. 26.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
  27. 27.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹200 to ₹170. By what percent did it come down?
  29. 29.The price of a school bag changes from ₹1000 to ₹500. By what percent did it come down?
  30. 30.The price of a bicycle is ₹4160. It goes up by 25%. What is the new price (in ₹)?
  31. 31.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  33. 33.A water tank holds 440 litres. 5% of the water is used. How many litres are left?
  34. 34.A water tank holds 1360 litres. 25% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹600. It goes up by 40%. What is the new price (in ₹)?
  36. 36.A town has 1900 people. Its population grows by 10%. How many people live there now?
  37. 37.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  38. 38.The price of a school bag changes from ₹2340 to ₹2223. By what percent did it come down?
  39. 39.The price of a bicycle is ₹500. It goes up by 10%. What is the new price (in ₹)?
  40. 40.A water tank holds 80 litres. 25% of the water is used. How many litres are left?

Answer key

  1. 30
  2. 1740
  3. 25
  4. 5082
  5. 30
  6. 12
  7. 3510
  8. 40.5
  9. 3315
  10. 2300
  11. 5
  12. 2645
  13. 2788
  14. 3105
  15. 61
  16. 714
  17. 864
  18. 47
  19. 6692
  20. 20
  21. 58
  22. 40
  23. 49
  24. 5166
  25. 10
  26. 68
  27. 57.5
  28. 15
  29. 50
  30. 5200
  31. 14.5
  32. 5
  33. 418
  34. 1020
  35. 840
  36. 2090
  37. 55
  38. 5
  39. 550
  40. 60

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