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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 61 · 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 ₹4097. By what percent did it come down?
  2. 2.A water tank holds 4080 litres. 25% of the water is used. How many litres are left?
  3. 3.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  4. 4.A water tank holds 4920 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹920 to ₹1150. By what percent did it go up?
  6. 6.A water tank holds 200 litres. 5% of the water is used. How many litres are left?
  7. 7.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  8. 8.The price of a school bag changes from ₹1220 to ₹1830. By what percent did it go up?
  9. 9.The price of a school bag changes from ₹480 to ₹240. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹2960 to ₹2812. By what percent did it come down?
  11. 11.A water tank holds 1100 litres. 40% of the water is used. How many litres are left?
  12. 12.The price of a bicycle is ₹60. It goes up by 5%. What is the new price (in ₹)?
  13. 13.A water tank holds 2920 litres. 30% of the water is used. How many litres are left?
  14. 14.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  15. 15.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
  16. 16.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  17. 17.The price of a bicycle is ₹1400. It goes up by 40%. What is the new price (in ₹)?
  18. 18.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  19. 19.A shop sells 1480 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  20. 20.The price of a school bag changes from ₹3900 to ₹5070. By what percent did it go up?
  21. 21.The price of a school bag changes from ₹1160 to ₹696. By what percent did it come down?
  22. 22.The price of a bicycle is ₹4660. It goes up by 30%. What is the new price (in ₹)?
  23. 23.A shop sells 1520 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  24. 24.A town has 640 people. Its population grows by 25%. How many people live there now?
  25. 25.A town has 2400 people. Its population grows by 5%. How many people live there now?
  26. 26.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  27. 27.A town has 2340 people. Its population grows by 15%. How many people live there now?
  28. 28.The price of a bicycle is ₹3740. It goes up by 20%. What is the new price (in ₹)?
  29. 29.The price of a bicycle is ₹3020. It goes up by 50%. What is the new price (in ₹)?
  30. 30.The price of a bicycle is ₹180. It goes up by 30%. What is the new price (in ₹)?
  31. 31.A town has 3340 people. Its population grows by 25%. How many people live there now?
  32. 32.A shop sells 360 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹1820 to ₹2002. By what percent did it go up?
  34. 34.The price of a bicycle is ₹380. It goes up by 10%. What is the new price (in ₹)?
  35. 35.A water tank holds 140 litres. 50% of the water is used. How many litres are left?
  36. 36.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  37. 37.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹3260. It goes up by 20%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹2460 to ₹1230. By what percent did it come down?
  40. 40.A town has 4580 people. Its population grows by 25%. How many people live there now?

Answer key

  1. 15
  2. 3060
  3. 42.5
  4. 3444
  5. 25
  6. 190
  7. 18.75
  8. 50
  9. 50
  10. 5
  11. 660
  12. 63
  13. 2044
  14. 4.5
  15. 936
  16. 47
  17. 1960
  18. 20.75
  19. 1554
  20. 30
  21. 40
  22. 6058
  23. 1900
  24. 800
  25. 2520
  26. 15.5
  27. 2691
  28. 4488
  29. 4530
  30. 234
  31. 4175
  32. 378
  33. 10
  34. 418
  35. 70
  36. 69
  37. 46
  38. 3912
  39. 50
  40. 5725

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