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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 250 · 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 ₹2000 to ₹2200. By what percent did it go up?
  2. 2.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹3880 to ₹3492. By what percent did it come down?
  4. 4.A shop sells 1520 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  5. 5.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹1400 to ₹1050. By what percent did it come down?
  7. 7.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  8. 8.A water tank holds 4840 litres. 30% of the water is used. How many litres are left?
  9. 9.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹4620 to ₹3234. By what percent did it come down?
  11. 11.A water tank holds 220 litres. 40% of the water is used. How many litres are left?
  12. 12.A town has 3140 people. Its population grows by 5%. How many people live there now?
  13. 13.The price of a school bag changes from ₹4560 to ₹5928. By what percent did it go up?
  14. 14.A town has 1960 people. Its population grows by 15%. How many people live there now?
  15. 15.A shop sells 1880 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  16. 16.A shop sells 3780 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  18. 18.A water tank holds 3680 litres. 5% of the water is used. How many litres are left?
  19. 19.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
  20. 20.The price of a school bag changes from ₹3700 to ₹2960. By what percent did it come down?
  21. 21.A water tank holds 2020 litres. 40% of the water is used. How many litres are left?
  22. 22.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  23. 23.A water tank holds 1460 litres. 30% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹4440 to ₹5772. By what percent did it go up?
  25. 25.A shop sells 1100 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  26. 26.The price of a school bag changes from ₹4700 to ₹4230. By what percent did it come down?
  27. 27.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  28. 28.A water tank holds 2260 litres. 15% of the water is used. How many litres are left?
  29. 29.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  30. 30.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  31. 31.The price of a bicycle is ₹3920. It goes up by 40%. What is the new price (in ₹)?
  32. 32.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  33. 33.A water tank holds 2700 litres. 20% of the water is used. How many litres are left?
  34. 34.The price of a school bag changes from ₹400 to ₹480. By what percent did it go up?
  35. 35.The price of a school bag changes from ₹1260 to ₹1512. By what percent did it go up?
  36. 36.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
  37. 37.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  38. 38.A shop sells 1640 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  39. 39.The price of a school bag changes from ₹4980 to ₹5976. By what percent did it go up?
  40. 40.The price of a school bag changes from ₹3200 to ₹4000. By what percent did it go up?

Answer key

  1. 10
  2. 87.5
  3. 10
  4. 1900
  5. 36.5
  6. 25
  7. 80
  8. 3388
  9. 18.75
  10. 30
  11. 132
  12. 3297
  13. 30
  14. 2254
  15. 2162
  16. 4914
  17. 44
  18. 3496
  19. 37.5
  20. 20
  21. 1212
  22. 43
  23. 1022
  24. 30
  25. 1430
  26. 10
  27. 28.75
  28. 1921
  29. 40
  30. 31.25
  31. 5488
  32. 33
  33. 2160
  34. 20
  35. 20
  36. 37.5
  37. 37
  38. 2132
  39. 20
  40. 25

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