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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 743 · 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.A water tank holds 1240 litres. 40% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹3180 to ₹1590. By what percent did it come down?
  3. 3.A water tank holds 1400 litres. 50% of the water is used. How many litres are left?
  4. 4.A town has 4980 people. Its population grows by 5%. How many people live there now?
  5. 5.The price of a school bag changes from ₹3040 to ₹3648. By what percent did it go up?
  6. 6.A town has 4880 people. Its population grows by 30%. How many people live there now?
  7. 7.A water tank holds 4300 litres. 30% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹3960. It goes up by 10%. What is the new price (in ₹)?
  9. 9.A water tank holds 700 litres. 50% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹740. It goes up by 50%. What is the new price (in ₹)?
  11. 11.A water tank holds 2360 litres. 25% of the water is used. How many litres are left?
  12. 12.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
  13. 13.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  14. 14.A town has 140 people. Its population grows by 40%. How many people live there now?
  15. 15.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  16. 16.A water tank holds 2400 litres. 10% of the water is used. How many litres are left?
  17. 17.A water tank holds 4580 litres. 50% of the water is used. How many litres are left?
  18. 18.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
  19. 19.A water tank holds 1060 litres. 20% of the water is used. How many litres are left?
  20. 20.A water tank holds 1040 litres. 30% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹1020 to ₹969. By what percent did it come down?
  22. 22.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  23. 23.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹3260 to ₹4890. By what percent did it go up?
  25. 25.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  26. 26.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  27. 27.A shop sells 1860 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹3640 to ₹3094. By what percent did it come down?
  29. 29.A shop sells 1080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  30. 30.A water tank holds 720 litres. 50% of the water is used. How many litres are left?
  31. 31.A shop sells 1420 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  32. 32.A shop sells 680 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  33. 33.A shop sells 120 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  34. 34.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  35. 35.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
  36. 36.The price of a bicycle is ₹4980. It goes up by 20%. What is the new price (in ₹)?
  37. 37.A town has 680 people. Its population grows by 30%. How many people live there now?
  38. 38.The price of a bicycle is ₹860. It goes up by 25%. What is the new price (in ₹)?
  39. 39.A town has 3280 people. Its population grows by 30%. How many people live there now?
  40. 40.The price of a school bag changes from ₹1380 to ₹1656. By what percent did it go up?

Answer key

  1. 744
  2. 50
  3. 700
  4. 5229
  5. 20
  6. 6344
  7. 3010
  8. 4356
  9. 350
  10. 1110
  11. 1770
  12. 82
  13. 47
  14. 196
  15. 72.5
  16. 2160
  17. 2290
  18. 65
  19. 848
  20. 728
  21. 5
  22. 12.5
  23. 37.5
  24. 50
  25. 19.25
  26. 43.75
  27. 2139
  28. 15
  29. 1134
  30. 360
  31. 2130
  32. 884
  33. 144
  34. 44
  35. 32.25
  36. 5976
  37. 884
  38. 1075
  39. 4264
  40. 20

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