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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 727 · 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 ₹4500. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A shop sells 640 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  3. 3.The price of a school bag changes from ₹4660 to ₹4893. By what percent did it go up?
  4. 4.A water tank holds 3800 litres. 50% of the water is used. How many litres are left?
  5. 5.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  6. 6.A water tank holds 1420 litres. 10% of the water is used. How many litres are left?
  7. 7.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  8. 8.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  9. 9.A water tank holds 3480 litres. 15% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹2480 to ₹1860. By what percent did it come down?
  11. 11.A water tank holds 1020 litres. 10% of the water is used. How many litres are left?
  12. 12.A water tank holds 1080 litres. 10% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹2420 to ₹2178. By what percent did it come down?
  14. 14.The price of a bicycle is ₹4260. It goes up by 10%. What is the new price (in ₹)?
  15. 15.A water tank holds 3080 litres. 5% of the water is used. How many litres are left?
  16. 16.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  17. 17.A water tank holds 4640 litres. 5% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹1380. It goes up by 40%. What is the new price (in ₹)?
  19. 19.A water tank holds 2500 litres. 40% of the water is used. How many litres are left?
  20. 20.A shop sells 80 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  21. 21.The price of a bicycle is ₹4760. It goes up by 30%. What is the new price (in ₹)?
  22. 22.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  23. 23.A town has 540 people. Its population grows by 15%. How many people live there now?
  24. 24.A water tank holds 3480 litres. 20% of the water is used. How many litres are left?
  25. 25.A water tank holds 2820 litres. 5% of the water is used. How many litres are left?
  26. 26.A shop sells 2000 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.A shop sells 60 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  28. 28.A town has 3040 people. Its population grows by 10%. How many people live there now?
  29. 29.The price of a school bag changes from ₹880 to ₹1056. By what percent did it go up?
  30. 30.A water tank holds 640 litres. 15% of the water is used. How many litres are left?
  31. 31.A town has 1140 people. Its population grows by 40%. How many people live there now?
  32. 32.A shop sells 1400 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  33. 33.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  34. 34.A shop sells 2140 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  35. 35.A water tank holds 1020 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 4400 litres. 50% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹780 to ₹936. By what percent did it go up?
  38. 38.A shop sells 2100 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  39. 39.A water tank holds 5000 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4360 to ₹4142. By what percent did it come down?

Answer key

  1. 5625
  2. 768
  3. 5
  4. 1900
  5. 33.5
  6. 1278
  7. 9.75
  8. 47.5
  9. 2958
  10. 25
  11. 918
  12. 972
  13. 10
  14. 4686
  15. 2926
  16. 28
  17. 4408
  18. 1932
  19. 1500
  20. 112
  21. 6188
  22. 20.75
  23. 621
  24. 2784
  25. 2679
  26. 3000
  27. 72
  28. 3344
  29. 20
  30. 544
  31. 1596
  32. 1680
  33. 5
  34. 2996
  35. 969
  36. 2200
  37. 20
  38. 2415
  39. 3000
  40. 5

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