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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 529 · 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 ₹4060. It goes up by 20%. What is the new price (in ₹)?
  2. 2.A water tank holds 3940 litres. 15% of the water is used. How many litres are left?
  3. 3.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  4. 4.A town has 1680 people. Its population grows by 20%. How many people live there now?
  5. 5.The price of a school bag changes from ₹4220 to ₹3165. By what percent did it come down?
  6. 6.A water tank holds 1640 litres. 25% of the water is used. How many litres are left?
  7. 7.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  8. 8.The price of a bicycle is ₹1220. It goes up by 5%. What is the new price (in ₹)?
  9. 9.A water tank holds 180 litres. 5% of the water is used. How many litres are left?
  10. 10.A shop sells 3280 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  11. 11.The price of a bicycle is ₹860. It goes up by 50%. What is the new price (in ₹)?
  12. 12.The price of a school bag changes from ₹1820 to ₹2366. By what percent did it go up?
  13. 13.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  14. 14.The price of a bicycle is ₹340. It goes up by 40%. What is the new price (in ₹)?
  15. 15.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  16. 16.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
  17. 17.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  18. 18.A water tank holds 4340 litres. 20% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹3440. It goes up by 5%. What is the new price (in ₹)?
  20. 20.The price of a bicycle is ₹2080. It goes up by 25%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹2920 to ₹2336. By what percent did it come down?
  22. 22.The price of a school bag changes from ₹1620 to ₹1458. By what percent did it come down?
  23. 23.A water tank holds 2120 litres. 25% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹3840 to ₹3648. By what percent did it come down?
  25. 25.A town has 2060 people. Its population grows by 50%. How many people live there now?
  26. 26.The price of a school bag changes from ₹3260 to ₹3586. By what percent did it go up?
  27. 27.A water tank holds 1680 litres. 25% of the water is used. How many litres are left?
  28. 28.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 4700 litres. 20% of the water is used. How many litres are left?
  30. 30.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  31. 31.The price of a bicycle is ₹740. It goes up by 40%. What is the new price (in ₹)?
  32. 32.A water tank holds 1560 litres. 20% of the water is used. How many litres are left?
  33. 33.The price of a school bag changes from ₹360 to ₹378. By what percent did it go up?
  34. 34.The price of a bicycle is ₹4880. It goes up by 5%. What is the new price (in ₹)?
  35. 35.The price of a school bag changes from ₹1880 to ₹1504. By what percent did it come down?
  36. 36.A water tank holds 1240 litres. 50% of the water is used. How many litres are left?
  37. 37.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
  38. 38.A water tank holds 1380 litres. 15% of the water is used. How many litres are left?
  39. 39.A water tank holds 3160 litres. 10% of the water is used. How many litres are left?
  40. 40.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =

Answer key

  1. 4872
  2. 3349
  3. 2
  4. 2016
  5. 25
  6. 1230
  7. 110
  8. 1281
  9. 171
  10. 4100
  11. 1290
  12. 30
  13. 49.5
  14. 476
  15. 37
  16. 5
  17. 46
  18. 3472
  19. 3612
  20. 2600
  21. 20
  22. 10
  23. 1590
  24. 5
  25. 3090
  26. 10
  27. 1260
  28. 65
  29. 3760
  30. 40
  31. 1036
  32. 1248
  33. 5
  34. 5124
  35. 20
  36. 620
  37. 32
  38. 1173
  39. 2844
  40. 43

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