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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 753 · 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 ₹2280 to ₹1140. By what percent did it come down?
  2. 2.A town has 3360 people. Its population grows by 10%. How many people live there now?
  3. 3.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  4. 4.A water tank holds 2920 litres. 20% of the water is used. How many litres are left?
  5. 5.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  6. 6.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  7. 7.A town has 3220 people. Its population grows by 5%. How many people live there now?
  8. 8.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
  9. 9.A town has 1280 people. Its population grows by 5%. How many people live there now?
  10. 10.The price of a school bag changes from ₹1140 to ₹969. By what percent did it come down?
  11. 11.The price of a bicycle is ₹1180. It goes up by 15%. What is the new price (in ₹)?
  12. 12.A town has 600 people. Its population grows by 20%. How many people live there now?
  13. 13.The price of a school bag changes from ₹2440 to ₹2196. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹3020 to ₹3171. By what percent did it go up?
  15. 15.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  16. 16.The price of a bicycle is ₹4080. It goes up by 20%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹1180 to ₹1770. By what percent did it go up?
  18. 18.A water tank holds 3860 litres. 10% of the water is used. How many litres are left?
  19. 19.A water tank holds 3040 litres. 25% of the water is used. How many litres are left?
  20. 20.The price of a school bag changes from ₹440 to ₹308. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹3660 to ₹4209. By what percent did it go up?
  22. 22.A water tank holds 1380 litres. 25% of the water is used. How many litres are left?
  23. 23.The price of a school bag changes from ₹4720 to ₹5192. By what percent did it go up?
  24. 24.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  25. 25.A shop sells 280 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  26. 26.A water tank holds 2600 litres. 20% of the water is used. How many litres are left?
  27. 27.The price of a school bag changes from ₹1740 to ₹2262. By what percent did it go up?
  28. 28.A shop sells 1360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  29. 29.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹2940. It goes up by 50%. What is the new price (in ₹)?
  31. 31.A water tank holds 980 litres. 20% of the water is used. How many litres are left?
  32. 32.The price of a bicycle is ₹3620. It goes up by 30%. What is the new price (in ₹)?
  33. 33.The price of a school bag changes from ₹3740 to ₹4114. By what percent did it go up?
  34. 34.A water tank holds 1000 litres. 20% of the water is used. How many litres are left?
  35. 35.A water tank holds 720 litres. 10% of the water is used. How many litres are left?
  36. 36.A shop sells 2960 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  37. 37.A water tank holds 60 litres. 20% of the water is used. How many litres are left?
  38. 38.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  39. 39.A water tank holds 2580 litres. 15% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹4360 to ₹5232. By what percent did it go up?

Answer key

  1. 50
  2. 3696
  3. 8
  4. 2336
  5. 55
  6. 20.75
  7. 3381
  8. 55
  9. 1344
  10. 15
  11. 1357
  12. 720
  13. 10
  14. 5
  15. 80
  16. 4896
  17. 50
  18. 3474
  19. 2280
  20. 30
  21. 15
  22. 1035
  23. 10
  24. 43
  25. 420
  26. 2080
  27. 30
  28. 1496
  29. 57.5
  30. 4410
  31. 784
  32. 4706
  33. 10
  34. 800
  35. 648
  36. 4440
  37. 48
  38. 38
  39. 2193
  40. 20

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