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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 962 · 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 price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹960. It goes up by 15%. What is the new price (in ₹)?
  3. 3.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  4. 4.A water tank holds 1100 litres. 5% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2780 to ₹2919. By what percent did it go up?
  6. 6.The price of a school bag changes from ₹2560 to ₹2688. By what percent did it go up?
  7. 7.A water tank holds 2940 litres. 50% of the water is used. How many litres are left?
  8. 8.The price of a bicycle is ₹3780. It goes up by 15%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹1300 to ₹975. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹4780 to ₹3824. By what percent did it come down?
  11. 11.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  12. 12.A water tank holds 4500 litres. 30% of the water is used. How many litres are left?
  13. 13.A shop sells 1620 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  14. 14.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  15. 15.The price of a school bag changes from ₹3600 to ₹2880. By what percent did it come down?
  16. 16.The price of a bicycle is ₹2560. It goes up by 5%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹2920 to ₹1460. By what percent did it come down?
  18. 18.A shop sells 2920 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  19. 19.A town has 4820 people. Its population grows by 20%. How many people live there now?
  20. 20.The price of a school bag changes from ₹4960 to ₹4216. By what percent did it come down?
  21. 21.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  22. 22.A water tank holds 3080 litres. 40% of the water is used. How many litres are left?
  23. 23.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹4240 to ₹2544. By what percent did it come down?
  25. 25.The price of a school bag changes from ₹5000 to ₹3000. By what percent did it come down?
  26. 26.A shop sells 1420 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹520 to ₹598. By what percent did it go up?
  28. 28.A town has 2360 people. Its population grows by 40%. How many people live there now?
  29. 29.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 1760 litres. 10% of the water is used. How many litres are left?
  31. 31.A shop sells 4980 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  32. 32.A shop sells 2500 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 ₹1420 to ₹1775. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹1620 to ₹1539. By what percent did it come down?
  35. 35.A town has 2860 people. Its population grows by 20%. How many people live there now?
  36. 36.The price of a bicycle is ₹3660. It goes up by 15%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹3300 to ₹4620. By what percent did it go up?
  38. 38.A shop sells 4580 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  39. 39.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  40. 40.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =

Answer key

  1. 20.75
  2. 1104
  3. 80
  4. 1045
  5. 5
  6. 5
  7. 1470
  8. 4347
  9. 25
  10. 20
  11. 62.5
  12. 3150
  13. 1701
  14. 33.5
  15. 20
  16. 2688
  17. 50
  18. 4380
  19. 5784
  20. 15
  21. 65
  22. 1848
  23. 87.5
  24. 40
  25. 40
  26. 2130
  27. 15
  28. 3304
  29. 36.5
  30. 1584
  31. 5727
  32. 2625
  33. 25
  34. 5
  35. 3432
  36. 4209
  37. 40
  38. 4809
  39. 49
  40. 28

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