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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 756 · 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 ₹1860 to ₹2232. By what percent did it go up?
  2. 2.The price of a bicycle is ₹2280. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  4. 4.A shop sells 4340 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  5. 5.The price of a bicycle is ₹220. It goes up by 20%. What is the new price (in ₹)?
  6. 6.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹4380 to ₹5037. By what percent did it go up?
  8. 8.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
  9. 9.A water tank holds 1300 litres. 15% of the water is used. How many litres are left?
  10. 10.A water tank holds 4300 litres. 50% of the water is used. How many litres are left?
  11. 11.A water tank holds 2560 litres. 15% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹1360 to ₹1292. By what percent did it come down?
  13. 13.A town has 1300 people. Its population grows by 30%. How many people live there now?
  14. 14.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.A water tank holds 4640 litres. 40% of the water is used. How many litres are left?
  16. 16.The price of a bicycle is ₹560. It goes up by 5%. What is the new price (in ₹)?
  17. 17.The price of a bicycle is ₹2880. It goes up by 10%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹2540. It goes up by 50%. What is the new price (in ₹)?
  19. 19.The price of a school bag changes from ₹3480 to ₹2958. By what percent did it come down?
  20. 20.A town has 4760 people. Its population grows by 15%. How many people live there now?
  21. 21.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  22. 22.A town has 4480 people. Its population grows by 30%. How many people live there now?
  23. 23.The price of a school bag changes from ₹1420 to ₹1491. By what percent did it go up?
  24. 24.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  25. 25.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  26. 26.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
  27. 27.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  28. 28.A water tank holds 80 litres. 20% of the water is used. How many litres are left?
  29. 29.The price of a bicycle is ₹1040. It goes up by 15%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹1060. It goes up by 15%. What is the new price (in ₹)?
  31. 31.The price of a bicycle is ₹1020. It goes up by 50%. What is the new price (in ₹)?
  32. 32.The price of a bicycle is ₹3860. It goes up by 5%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹4760 to ₹5712. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹4400 to ₹3080. By what percent did it come down?
  35. 35.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  36. 36.The price of a school bag changes from ₹4500 to ₹3150. By what percent did it come down?
  37. 37.The price of a school bag changes from ₹3000 to ₹4200. By what percent did it go up?
  38. 38.A water tank holds 3700 litres. 30% of the water is used. How many litres are left?
  39. 39.The price of a bicycle is ₹340. It goes up by 25%. What is the new price (in ₹)?
  40. 40.A town has 4320 people. Its population grows by 15%. How many people live there now?

Answer key

  1. 20
  2. 3420
  3. 12.5
  4. 4557
  5. 264
  6. 58
  7. 15
  8. 52
  9. 1105
  10. 2150
  11. 2176
  12. 5
  13. 1690
  14. 36.25
  15. 2784
  16. 588
  17. 3168
  18. 3810
  19. 15
  20. 5474
  21. 10.5
  22. 5824
  23. 5
  24. 60
  25. 24
  26. 110
  27. 33.5
  28. 64
  29. 1196
  30. 1219
  31. 1530
  32. 4053
  33. 20
  34. 30
  35. 32
  36. 30
  37. 40
  38. 2590
  39. 425
  40. 4968

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