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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 872 · 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 ₹1600 to ₹1280. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹3620 to ₹3801. By what percent did it go up?
  3. 3.A town has 780 people. Its population grows by 5%. How many people live there now?
  4. 4.The price of a school bag changes from ₹3200 to ₹4160. By what percent did it go up?
  5. 5.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
  6. 6.The price of a school bag changes from ₹1540 to ₹2002. By what percent did it go up?
  7. 7.The price of a school bag changes from ₹460 to ₹575. By what percent did it go up?
  8. 8.The price of a bicycle is ₹4220. It goes up by 5%. What is the new price (in ₹)?
  9. 9.The price of a bicycle is ₹1440. It goes up by 5%. What is the new price (in ₹)?
  10. 10.A water tank holds 1280 litres. 15% of the water is used. How many litres are left?
  11. 11.A water tank holds 440 litres. 25% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹1260 to ₹1323. By what percent did it go up?
  13. 13.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  14. 14.A water tank holds 2380 litres. 25% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹2840 to ₹3266. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹760 to ₹646. By what percent did it come down?
  17. 17.A water tank holds 1880 litres. 15% of the water is used. How many litres are left?
  18. 18.A water tank holds 3000 litres. 10% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹440 to ₹264. By what percent did it come down?
  20. 20.A water tank holds 4100 litres. 5% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹4340 to ₹3906. By what percent did it come down?
  22. 22.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  23. 23.The price of a school bag changes from ₹4600 to ₹5980. By what percent did it go up?
  24. 24.A water tank holds 3740 litres. 15% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹1560 to ₹1638. By what percent did it go up?
  26. 26.A water tank holds 2060 litres. 5% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹2600 to ₹1560. By what percent did it come down?
  28. 28.A shop sells 300 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  29. 29.The price of a school bag changes from ₹1880 to ₹1504. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹1880 to ₹1786. By what percent did it come down?
  31. 31.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
  32. 32.The price of a bicycle is ₹820. It goes up by 40%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹600 to ₹540. By what percent did it come down?
  34. 34.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
  35. 35.The price of a bicycle is ₹3440. It goes up by 20%. What is the new price (in ₹)?
  36. 36.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.A shop sells 4680 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  38. 38.A town has 2080 people. Its population grows by 10%. How many people live there now?
  39. 39.A shop sells 2020 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  40. 40.The price of a school bag changes from ₹4840 to ₹6292. By what percent did it go up?

Answer key

  1. 20
  2. 5
  3. 819
  4. 30
  5. 44
  6. 30
  7. 25
  8. 4431
  9. 1512
  10. 1088
  11. 330
  12. 5
  13. 26.5
  14. 1785
  15. 15
  16. 15
  17. 1598
  18. 2700
  19. 40
  20. 3895
  21. 10
  22. 43.75
  23. 30
  24. 3179
  25. 5
  26. 1957
  27. 40
  28. 360
  29. 20
  30. 5
  31. 14
  32. 1148
  33. 10
  34. 43
  35. 4128
  36. 33.5
  37. 5616
  38. 2288
  39. 2323
  40. 30

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