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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 363 · 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 comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  2. 2.The price of a school bag changes from ₹4100 to ₹6150. By what percent did it go up?
  3. 3.The price of a school bag changes from ₹1400 to ₹1470. By what percent did it go up?
  4. 4.The price of a bicycle is ₹4380. It goes up by 15%. What is the new price (in ₹)?
  5. 5.A shop sells 3660 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  6. 6.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  7. 7.A shop sells 4940 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  8. 8.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  9. 9.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹1960 to ₹1372. By what percent did it come down?
  11. 11.A water tank holds 3760 litres. 20% of the water is used. How many litres are left?
  12. 12.A water tank holds 120 litres. 30% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹1200 to ₹1440. By what percent did it go up?
  14. 14.A water tank holds 4900 litres. 25% of the water is used. How many litres are left?
  15. 15.A town has 2620 people. Its population grows by 5%. How many people live there now?
  16. 16.The price of a school bag changes from ₹4120 to ₹3502. By what percent did it come down?
  17. 17.A water tank holds 1020 litres. 10% of the water is used. How many litres are left?
  18. 18.The price of a bicycle is ₹3720. It goes up by 25%. What is the new price (in ₹)?
  19. 19.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  20. 20.A town has 640 people. Its population grows by 40%. How many people live there now?
  21. 21.A water tank holds 2280 litres. 10% of the water is used. How many litres are left?
  22. 22.The price of a school bag changes from ₹3880 to ₹4850. By what percent did it go up?
  23. 23.The price of a bicycle is ₹1940. It goes up by 40%. What is the new price (in ₹)?
  24. 24.The price of a bicycle is ₹2180. It goes up by 20%. What is the new price (in ₹)?
  25. 25.The price of a school bag changes from ₹4180 to ₹2926. By what percent did it come down?
  26. 26.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  27. 27.The price of a bicycle is ₹800. It goes up by 15%. What is the new price (in ₹)?
  28. 28.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  29. 29.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  30. 30.A water tank holds 3200 litres. 10% of the water is used. How many litres are left?
  31. 31.A water tank holds 540 litres. 20% of the water is used. How many litres are left?
  32. 32.A water tank holds 1240 litres. 30% of the water is used. How many litres are left?
  33. 33.A water tank holds 3180 litres. 5% of the water is used. How many litres are left?
  34. 34.A water tank holds 1680 litres. 20% of the water is used. How many litres are left?
  35. 35.A price goes up by 25% and then comes down by 10%. By what percent has it gone up in all? =
  36. 36.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.A shop sells 3380 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  38. 38.The price of a school bag changes from ₹700 to ₹420. By what percent did it come down?
  39. 39.The price of a school bag changes from ₹1180 to ₹590. By what percent did it come down?
  40. 40.A water tank holds 260 litres. 10% of the water is used. How many litres are left?

Answer key

  1. 28.75
  2. 50
  3. 5
  4. 5037
  5. 5124
  6. 21
  7. 6916
  8. 95
  9. 80
  10. 30
  11. 3008
  12. 84
  13. 20
  14. 3675
  15. 2751
  16. 15
  17. 918
  18. 4650
  19. 43
  20. 896
  21. 2052
  22. 25
  23. 2716
  24. 2616
  25. 30
  26. 15.5
  27. 920
  28. 44
  29. 60
  30. 2880
  31. 432
  32. 868
  33. 3021
  34. 1344
  35. 12.5
  36. 24
  37. 3887
  38. 40
  39. 50
  40. 234

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