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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 77 · 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 ₹1380 to ₹966. By what percent did it come down?
  2. 2.The price of a bicycle is ₹3920. It goes up by 5%. What is the new price (in ₹)?
  3. 3.The price of a school bag changes from ₹4300 to ₹2150. By what percent did it come down?
  4. 4.A water tank holds 600 litres. 40% of the water is used. How many litres are left?
  5. 5.A shop sells 1760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  6. 6.A shop sells 2380 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  7. 7.A water tank holds 4280 litres. 25% of the water is used. How many litres are left?
  8. 8.A town has 940 people. Its population grows by 20%. How many people live there now?
  9. 9.A water tank holds 4640 litres. 10% of the water is used. How many litres are left?
  10. 10.The price of a bicycle is ₹1720. It goes up by 15%. What is the new price (in ₹)?
  11. 11.The price of a bicycle is ₹3040. It goes up by 30%. What is the new price (in ₹)?
  12. 12.A town has 4300 people. Its population grows by 15%. How many people live there now?
  13. 13.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  14. 14.A shop sells 3800 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  15. 15.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
  16. 16.The price of a school bag changes from ₹5000 to ₹3750. By what percent did it come down?
  17. 17.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  18. 18.A town has 1560 people. Its population grows by 5%. How many people live there now?
  19. 19.The price of a school bag changes from ₹4480 to ₹3808. By what percent did it come down?
  20. 20.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  22. 22.A shop sells 2740 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹2720 to ₹3808. By what percent did it go up?
  24. 24.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  25. 25.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.A shop sells 1100 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  27. 27.A shop sells 3380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  28. 28.The price of a school bag changes from ₹2260 to ₹1921. By what percent did it come down?
  29. 29.A water tank holds 4460 litres. 5% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹4320 to ₹5184. By what percent did it go up?
  31. 31.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  32. 32.A town has 1040 people. Its population grows by 50%. How many people live there now?
  33. 33.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
  34. 34.A water tank holds 1500 litres. 10% of the water is used. How many litres are left?
  35. 35.A water tank holds 3520 litres. 20% of the water is used. How many litres are left?
  36. 36.A price goes up by 30% and then goes up by 15% more. By what percent has it gone up in all? =
  37. 37.The price of a school bag changes from ₹4520 to ₹5876. By what percent did it go up?
  38. 38.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  39. 39.A water tank holds 4240 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹2660 to ₹3990. By what percent did it go up?

Answer key

  1. 30
  2. 4116
  3. 50
  4. 360
  5. 1936
  6. 2975
  7. 3210
  8. 1128
  9. 4176
  10. 1978
  11. 3952
  12. 4945
  13. 8
  14. 3990
  15. 68
  16. 25
  17. 27.75
  18. 1638
  19. 15
  20. 21
  21. 55
  22. 2877
  23. 40
  24. 55
  25. 72.5
  26. 1375
  27. 3887
  28. 15
  29. 4237
  30. 20
  31. 44
  32. 1560
  33. 82
  34. 1350
  35. 2816
  36. 49.5
  37. 30
  38. 52.5
  39. 2544
  40. 50

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