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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 460 · 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 shop sells 3420 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  2. 2.The price of a bicycle is ₹2140. It goes up by 50%. What is the new price (in ₹)?
  3. 3.A water tank holds 2260 litres. 5% of the water is used. How many litres are left?
  4. 4.A water tank holds 2840 litres. 30% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2900 to ₹3480. By what percent did it go up?
  6. 6.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
  7. 7.A town has 4960 people. Its population grows by 10%. How many people live there now?
  8. 8.A town has 4820 people. Its population grows by 25%. How many people live there now?
  9. 9.The price of a bicycle is ₹3360. It goes up by 40%. What is the new price (in ₹)?
  10. 10.The price of a school bag changes from ₹4240 to ₹3816. By what percent did it come down?
  11. 11.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
  12. 12.A price goes up by 10% and then goes up by 20% more. By what percent has it gone up in all? =
  13. 13.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
  14. 14.A water tank holds 700 litres. 5% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹540 to ₹675. By what percent did it go up?
  16. 16.A shop sells 4820 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  17. 17.The price of a bicycle is ₹1680. It goes up by 10%. What is the new price (in ₹)?
  18. 18.The price of a bicycle is ₹740. It goes up by 25%. What is the new price (in ₹)?
  19. 19.A town has 260 people. Its population grows by 25%. How many people live there now?
  20. 20.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.A water tank holds 100 litres. 25% of the water is used. How many litres are left?
  22. 22.A water tank holds 4480 litres. 25% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹820 to ₹656. By what percent did it come down?
  24. 24.A water tank holds 120 litres. 20% of the water is used. How many litres are left?
  25. 25.A water tank holds 3560 litres. 50% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹880 to ₹440. By what percent did it come down?
  27. 27.The price of a bicycle is ₹2720. It goes up by 25%. What is the new price (in ₹)?
  28. 28.A price comes down by 20% and then comes down by 25% more. By what percent has it come down in all? =
  29. 29.A water tank holds 3240 litres. 5% of the water is used. How many litres are left?
  30. 30.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
  31. 31.The price of a school bag changes from ₹1120 to ₹1064. By what percent did it come down?
  32. 32.A water tank holds 3040 litres. 5% of the water is used. How many litres are left?
  33. 33.A shop sells 2160 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  34. 34.A town has 1440 people. Its population grows by 25%. How many people live there now?
  35. 35.A water tank holds 1480 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 400 litres. 5% of the water is used. How many litres are left?
  37. 37.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  38. 38.A town has 1580 people. Its population grows by 10%. How many people live there now?
  39. 39.The price of a school bag changes from ₹2820 to ₹3102. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹80 to ₹96. By what percent did it go up?

Answer key

  1. 4104
  2. 3210
  3. 2147
  4. 1988
  5. 20
  6. 12.5
  7. 5456
  8. 6025
  9. 4704
  10. 10
  11. 87.5
  12. 32
  13. 28
  14. 665
  15. 25
  16. 7230
  17. 1848
  18. 925
  19. 325
  20. 26.5
  21. 75
  22. 3360
  23. 20
  24. 96
  25. 1780
  26. 50
  27. 3400
  28. 40
  29. 3078
  30. 60
  31. 5
  32. 2888
  33. 3240
  34. 1800
  35. 1406
  36. 380
  37. 33
  38. 1738
  39. 10
  40. 20

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