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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 73 · 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 ₹3480 to ₹3654. By what percent did it go up?
  2. 2.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  3. 3.A town has 3480 people. Its population grows by 10%. How many people live there now?
  4. 4.A town has 600 people. Its population grows by 50%. How many people live there now?
  5. 5.The price of a school bag changes from ₹1080 to ₹540. By what percent did it come down?
  6. 6.A water tank holds 4700 litres. 10% of the water is used. How many litres are left?
  7. 7.The price of a bicycle is ₹1320. It goes up by 25%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹60 to ₹84. By what percent did it go up?
  9. 9.A water tank holds 1360 litres. 30% of the water is used. How many litres are left?
  10. 10.A shop sells 3240 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  11. 11.A town has 2200 people. Its population grows by 10%. How many people live there now?
  12. 12.A water tank holds 1320 litres. 40% of the water is used. How many litres are left?
  13. 13.A town has 1740 people. Its population grows by 50%. How many people live there now?
  14. 14.The price of a school bag changes from ₹420 to ₹504. By what percent did it go up?
  15. 15.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
  16. 16.A water tank holds 900 litres. 40% of the water is used. How many litres are left?
  17. 17.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  18. 18.A town has 4660 people. Its population grows by 40%. How many people live there now?
  19. 19.The price of a school bag changes from ₹4300 to ₹6020. By what percent did it go up?
  20. 20.The price of a school bag changes from ₹4320 to ₹2592. By what percent did it come down?
  21. 21.A town has 240 people. Its population grows by 30%. How many people live there now?
  22. 22.A town has 4700 people. Its population grows by 30%. How many people live there now?
  23. 23.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  24. 24.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  25. 25.A water tank holds 4000 litres. 50% of the water is used. How many litres are left?
  26. 26.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  27. 27.The price of a school bag changes from ₹4020 to ₹2412. By what percent did it come down?
  28. 28.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  29. 29.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.The price of a school bag changes from ₹2560 to ₹3200. By what percent did it go up?
  31. 31.A water tank holds 3780 litres. 20% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹480 to ₹288. By what percent did it come down?
  33. 33.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹3300 to ₹2310. By what percent did it come down?
  35. 35.A shop sells 2080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  36. 36.A water tank holds 1480 litres. 20% of the water is used. How many litres are left?
  37. 37.The price of a bicycle is ₹2920. It goes up by 10%. What is the new price (in ₹)?
  38. 38.A shop sells 4160 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹540 to ₹675. By what percent did it go up?
  40. 40.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =

Answer key

  1. 5
  2. 26
  3. 3828
  4. 900
  5. 50
  6. 4230
  7. 1650
  8. 40
  9. 952
  10. 3888
  11. 2420
  12. 792
  13. 2610
  14. 20
  15. 49
  16. 540
  17. 70
  18. 6524
  19. 40
  20. 40
  21. 312
  22. 6110
  23. 55
  24. 49
  25. 2000
  26. 40
  27. 40
  28. 46
  29. 61
  30. 25
  31. 3024
  32. 40
  33. 19
  34. 30
  35. 2184
  36. 1184
  37. 3212
  38. 6240
  39. 25
  40. 65

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