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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 685 · 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 ₹3680 to ₹3496. By what percent did it come down?
  2. 2.A water tank holds 1580 litres. 15% of the water is used. How many litres are left?
  3. 3.The price of a school bag changes from ₹4200 to ₹2940. By what percent did it come down?
  4. 4.A water tank holds 320 litres. 10% of the water is used. How many litres are left?
  5. 5.A shop sells 4720 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  6. 6.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  7. 7.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
  8. 8.A water tank holds 2920 litres. 50% of the water is used. How many litres are left?
  9. 9.The price of a bicycle is ₹1880. It goes up by 15%. What is the new price (in ₹)?
  10. 10.A town has 1080 people. Its population grows by 10%. How many people live there now?
  11. 11.A water tank holds 3400 litres. 15% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹3780 to ₹3402. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹3340 to ₹4342. By what percent did it go up?
  14. 14.The price of a school bag changes from ₹1420 to ₹1775. By what percent did it go up?
  15. 15.A water tank holds 4080 litres. 5% of the water is used. How many litres are left?
  16. 16.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  17. 17.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  18. 18.A shop sells 3120 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  19. 19.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
  20. 20.A shop sells 2340 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  21. 21.The price of a school bag changes from ₹2060 to ₹1957. By what percent did it come down?
  22. 22.A town has 3520 people. Its population grows by 15%. How many people live there now?
  23. 23.A water tank holds 3120 litres. 25% of the water is used. How many litres are left?
  24. 24.A water tank holds 2200 litres. 10% of the water is used. How many litres are left?
  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 water tank holds 340 litres. 50% of the water is used. How many litres are left?
  27. 27.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  28. 28.The price of a school bag changes from ₹1020 to ₹1173. By what percent did it go up?
  29. 29.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  30. 30.A town has 1500 people. Its population grows by 40%. How many people live there now?
  31. 31.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  32. 32.The price of a school bag changes from ₹1700 to ₹2125. By what percent did it go up?
  33. 33.A water tank holds 100 litres. 10% of the water is used. How many litres are left?
  34. 34.A shop sells 2020 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  35. 35.A water tank holds 180 litres. 50% of the water is used. How many litres are left?
  36. 36.A water tank holds 4920 litres. 30% of the water is used. How many litres are left?
  37. 37.A water tank holds 2780 litres. 10% of the water is used. How many litres are left?
  38. 38.A water tank holds 1180 litres. 20% of the water is used. How many litres are left?
  39. 39.A water tank holds 2040 litres. 20% of the water is used. How many litres are left?
  40. 40.A water tank holds 2580 litres. 40% of the water is used. How many litres are left?

Answer key

  1. 5
  2. 1343
  3. 30
  4. 288
  5. 5428
  6. 24
  7. 32.5
  8. 1460
  9. 2162
  10. 1188
  11. 2890
  12. 10
  13. 30
  14. 25
  15. 3876
  16. 36.5
  17. 87.5
  18. 3744
  19. 43.75
  20. 2691
  21. 5
  22. 4048
  23. 2340
  24. 1980
  25. 19.25
  26. 170
  27. 28
  28. 15
  29. 47.5
  30. 2100
  31. 32
  32. 25
  33. 90
  34. 3030
  35. 90
  36. 3444
  37. 2502
  38. 944
  39. 1632
  40. 1548

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