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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 69 · 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 ₹4820 to ₹5061. By what percent did it go up?
  2. 2.The price of a school bag changes from ₹3020 to ₹2567. By what percent did it come down?
  3. 3.The price of a school bag changes from ₹180 to ₹225. By what percent did it go up?
  4. 4.The price of a school bag changes from ₹1260 to ₹1071. By what percent did it come down?
  5. 5.A water tank holds 580 litres. 5% of the water is used. How many litres are left?
  6. 6.A town has 2940 people. Its population grows by 10%. How many people live there now?
  7. 7.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  8. 8.A shop sells 3860 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  9. 9.A water tank holds 3240 litres. 40% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹680. It goes up by 40%. What is the new price (in ₹)?
  11. 11.A water tank holds 4660 litres. 15% of the water is used. How many litres are left?
  12. 12.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹3280 to ₹2788. By what percent did it come down?
  14. 14.A town has 2360 people. Its population grows by 30%. How many people live there now?
  15. 15.The price of a school bag changes from ₹2780 to ₹2641. By what percent did it come down?
  16. 16.The price of a bicycle is ₹600. It goes up by 40%. What is the new price (in ₹)?
  17. 17.A water tank holds 2280 litres. 5% of the water is used. How many litres are left?
  18. 18.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  19. 19.The price of a school bag changes from ₹2160 to ₹1080. By what percent did it come down?
  20. 20.A shop sells 3420 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  21. 21.A shop sells 4480 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹2740. It goes up by 10%. What is the new price (in ₹)?
  23. 23.The price of a school bag changes from ₹4120 to ₹3708. By what percent did it come down?
  24. 24.A price comes down by 40% and then comes down by 40% more. By what percent has it come down in all? =
  25. 25.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  26. 26.The price of a bicycle is ₹4340. It goes up by 30%. What is the new price (in ₹)?
  27. 27.A water tank holds 1160 litres. 10% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹3080 to ₹3234. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹1100 to ₹1320. By what percent did it go up?
  30. 30.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹4240 to ₹4664. By what percent did it go up?
  32. 32.A water tank holds 2440 litres. 5% of the water is used. How many litres are left?
  33. 33.The price of a bicycle is ₹2360. It goes up by 50%. What is the new price (in ₹)?
  34. 34.A water tank holds 280 litres. 20% of the water is used. How many litres are left?
  35. 35.A water tank holds 1800 litres. 40% of the water is used. How many litres are left?
  36. 36.A town has 580 people. Its population grows by 5%. How many people live there now?
  37. 37.A town has 3500 people. Its population grows by 50%. How many people live there now?
  38. 38.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  39. 39.The price of a bicycle is ₹2100. It goes up by 30%. What is the new price (in ₹)?
  40. 40.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =

Answer key

  1. 5
  2. 15
  3. 25
  4. 15
  5. 551
  6. 3234
  7. 19.25
  8. 5018
  9. 1944
  10. 952
  11. 3961
  12. 4.5
  13. 15
  14. 3068
  15. 5
  16. 840
  17. 2166
  18. 52
  19. 50
  20. 3591
  21. 5600
  22. 3014
  23. 10
  24. 64
  25. 70
  26. 5642
  27. 1044
  28. 5
  29. 20
  30. 20.75
  31. 10
  32. 2318
  33. 3540
  34. 224
  35. 1080
  36. 609
  37. 5250
  38. 32.5
  39. 2730
  40. 33

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