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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 731 · 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 ₹2280 to ₹2166. By what percent did it come down?
  2. 2.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  3. 3.A water tank holds 1960 litres. 15% of the water is used. How many litres are left?
  4. 4.A town has 1200 people. Its population grows by 40%. How many people live there now?
  5. 5.The price of a school bag changes from ₹340 to ₹425. By what percent did it go up?
  6. 6.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  7. 7.A water tank holds 4540 litres. 20% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹560 to ₹728. By what percent did it go up?
  9. 9.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  10. 10.A water tank holds 860 litres. 50% of the water is used. How many litres are left?
  11. 11.The price of a bicycle is ₹3440. It goes up by 40%. What is the new price (in ₹)?
  12. 12.A water tank holds 2220 litres. 20% of the water is used. How many litres are left?
  13. 13.A water tank holds 1820 litres. 20% of the water is used. How many litres are left?
  14. 14.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  15. 15.A water tank holds 4860 litres. 30% of the water is used. How many litres are left?
  16. 16.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  17. 17.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  18. 18.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
  19. 19.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹4680 to ₹5382. By what percent did it go up?
  21. 21.The price of a bicycle is ₹4120. It goes up by 20%. What is the new price (in ₹)?
  22. 22.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹3860 to ₹4825. By what percent did it go up?
  24. 24.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  25. 25.A town has 220 people. Its population grows by 50%. How many people live there now?
  26. 26.A shop sells 3280 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹360 to ₹306. By what percent did it come down?
  28. 28.A shop sells 620 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  29. 29.A water tank holds 2300 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹3040 to ₹2584. By what percent did it come down?
  31. 31.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹4660 to ₹3495. By what percent did it come down?
  33. 33.A water tank holds 4140 litres. 40% of the water is used. How many litres are left?
  34. 34.A shop sells 2780 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  35. 35.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  36. 36.The price of a school bag changes from ₹2320 to ₹1624. By what percent did it come down?
  37. 37.A water tank holds 3160 litres. 10% of the water is used. How many litres are left?
  38. 38.A town has 120 people. Its population grows by 5%. How many people live there now?
  39. 39.A water tank holds 4660 litres. 10% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4720 to ₹3304. By what percent did it come down?

Answer key

  1. 5
  2. 47
  3. 1666
  4. 1680
  5. 25
  6. 36.25
  7. 3632
  8. 30
  9. 54
  10. 430
  11. 4816
  12. 1776
  13. 1456
  14. 37
  15. 3402
  16. 31.25
  17. 54
  18. 3.5
  19. 23.5
  20. 15
  21. 4944
  22. 75
  23. 25
  24. 52.5
  25. 330
  26. 4100
  27. 15
  28. 775
  29. 2185
  30. 15
  31. 55
  32. 25
  33. 2484
  34. 2919
  35. 14.5
  36. 30
  37. 2844
  38. 126
  39. 4194
  40. 30

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