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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 344 · 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 ₹940. It goes up by 50%. What is the new price (in ₹)?
  2. 2.The price of a bicycle is ₹2160. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A shop sells 2040 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  4. 4.The price of a school bag changes from ₹2380 to ₹2023. By what percent did it come down?
  5. 5.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
  6. 6.A water tank holds 3520 litres. 15% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹3820 to ₹3247. By what percent did it come down?
  8. 8.A shop sells 420 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  9. 9.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
  10. 10.A town has 500 people. Its population grows by 30%. How many people live there now?
  11. 11.A water tank holds 2900 litres. 20% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹3400 to ₹3570. By what percent did it go up?
  13. 13.A town has 4880 people. Its population grows by 15%. How many people live there now?
  14. 14.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  15. 15.A town has 80 people. Its population grows by 40%. How many people live there now?
  16. 16.A water tank holds 3280 litres. 20% of the water is used. How many litres are left?
  17. 17.The price of a bicycle is ₹2880. It goes up by 30%. What is the new price (in ₹)?
  18. 18.A water tank holds 2340 litres. 25% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹2820 to ₹2256. By what percent did it come down?
  20. 20.The price of a bicycle is ₹1460. It goes up by 10%. What is the new price (in ₹)?
  21. 21.A water tank holds 4060 litres. 40% of the water is used. How many litres are left?
  22. 22.A water tank holds 4800 litres. 30% of the water is used. How many litres are left?
  23. 23.A town has 420 people. Its population grows by 10%. How many people live there now?
  24. 24.A water tank holds 1900 litres. 40% of the water is used. How many litres are left?
  25. 25.The price of a bicycle is ₹2640. It goes up by 20%. What is the new price (in ₹)?
  26. 26.The price of a school bag changes from ₹2980 to ₹2682. By what percent did it come down?
  27. 27.The price of a bicycle is ₹1800. It goes up by 20%. What is the new price (in ₹)?
  28. 28.A shop sells 3440 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹2520 to ₹2772. By what percent did it go up?
  30. 30.The price of a school bag changes from ₹4360 to ₹3270. By what percent did it come down?
  31. 31.A water tank holds 1820 litres. 10% of the water is used. How many litres are left?
  32. 32.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.The price of a bicycle is ₹2760. It goes up by 25%. What is the new price (in ₹)?
  34. 34.The price of a school bag changes from ₹460 to ₹345. By what percent did it come down?
  35. 35.The price of a bicycle is ₹1500. It goes up by 5%. What is the new price (in ₹)?
  36. 36.A town has 3640 people. Its population grows by 10%. How many people live there now?
  37. 37.The price of a school bag changes from ₹120 to ₹114. By what percent did it come down?
  38. 38.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  39. 39.A water tank holds 1060 litres. 20% of the water is used. How many litres are left?
  40. 40.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =

Answer key

  1. 1410
  2. 2592
  3. 2856
  4. 15
  5. 10.5
  6. 2992
  7. 15
  8. 504
  9. 62.5
  10. 650
  11. 2320
  12. 5
  13. 5612
  14. 20.75
  15. 112
  16. 2624
  17. 3744
  18. 1755
  19. 20
  20. 1606
  21. 2436
  22. 3360
  23. 462
  24. 1140
  25. 3168
  26. 10
  27. 2160
  28. 4472
  29. 10
  30. 25
  31. 1638
  32. 65
  33. 3450
  34. 25
  35. 1575
  36. 4004
  37. 5
  38. 47.5
  39. 848
  40. 95

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