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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 483 · 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 ₹1660. It goes up by 10%. What is the new price (in ₹)?
  2. 2.A water tank holds 760 litres. 10% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹3200. It goes up by 15%. What is the new price (in ₹)?
  4. 4.A town has 2480 people. Its population grows by 5%. How many people live there now?
  5. 5.The price of a school bag changes from ₹1800 to ₹1620. By what percent did it come down?
  6. 6.A water tank holds 3400 litres. 25% of the water is used. How many litres are left?
  7. 7.The price of a bicycle is ₹4040. It goes up by 20%. What is the new price (in ₹)?
  8. 8.The price of a school bag changes from ₹3740 to ₹4675. By what percent did it go up?
  9. 9.A shop sells 1380 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  10. 10.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 780 litres. 30% of the water is used. How many litres are left?
  12. 12.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
  13. 13.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  14. 14.A town has 4100 people. Its population grows by 40%. How many people live there now?
  15. 15.A town has 3660 people. Its population grows by 10%. How many people live there now?
  16. 16.A town has 4600 people. Its population grows by 40%. How many people live there now?
  17. 17.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  18. 18.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  19. 19.The price of a school bag changes from ₹1920 to ₹2208. By what percent did it go up?
  20. 20.A water tank holds 3260 litres. 50% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹2900 to ₹3045. By what percent did it go up?
  22. 22.A water tank holds 4620 litres. 20% of the water is used. How many litres are left?
  23. 23.A price comes down by 25% and then comes down by 10% more. By what percent has it come down in all? =
  24. 24.The price of a school bag changes from ₹3100 to ₹4340. By what percent did it go up?
  25. 25.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
  26. 26.The price of a bicycle is ₹80. It goes up by 10%. What is the new price (in ₹)?
  27. 27.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  28. 28.A shop sells 4440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  30. 30.A water tank holds 400 litres. 10% of the water is used. How many litres are left?
  31. 31.A shop sells 4800 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  32. 32.The price of a bicycle is ₹1760. It goes up by 50%. What is the new price (in ₹)?
  33. 33.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  34. 34.The price of a bicycle is ₹3520. It goes up by 25%. What is the new price (in ₹)?
  35. 35.A town has 720 people. Its population grows by 25%. How many people live there now?
  36. 36.A town has 4020 people. Its population grows by 30%. How many people live there now?
  37. 37.A water tank holds 3660 litres. 10% of the water is used. How many litres are left?
  38. 38.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
  39. 39.The price of a school bag changes from ₹4200 to ₹4620. By what percent did it go up?
  40. 40.A water tank holds 3740 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 1826
  2. 684
  3. 3680
  4. 2604
  5. 10
  6. 2550
  7. 4848
  8. 25
  9. 1518
  10. 38
  11. 546
  12. 28
  13. 32
  14. 5740
  15. 4026
  16. 6440
  17. 68
  18. 51
  19. 15
  20. 1630
  21. 5
  22. 3696
  23. 32.5
  24. 40
  25. 936
  26. 88
  27. 43
  28. 4884
  29. 20.75
  30. 360
  31. 5280
  32. 2640
  33. 55
  34. 4400
  35. 900
  36. 5226
  37. 3294
  38. 4.5
  39. 10
  40. 2992

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