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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 289 · 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 ₹4760 to ₹2856. By what percent did it come down?
  2. 2.The price of a school bag changes from ₹3940 to ₹4137. By what percent did it go up?
  3. 3.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  4. 4.The price of a bicycle is ₹1240. It goes up by 30%. What is the new price (in ₹)?
  5. 5.A water tank holds 3580 litres. 10% of the water is used. How many litres are left?
  6. 6.The price of a school bag changes from ₹960 to ₹1104. By what percent did it go up?
  7. 7.A water tank holds 4740 litres. 30% of the water is used. How many litres are left?
  8. 8.The price of a school bag changes from ₹100 to ₹80. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹1380 to ₹966. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹1880 to ₹1316. By what percent did it come down?
  11. 11.A shop sells 2740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  12. 12.The price of a school bag changes from ₹1100 to ₹1210. By what percent did it go up?
  13. 13.The price of a school bag changes from ₹1360 to ₹1700. By what percent did it go up?
  14. 14.A shop sells 4580 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  15. 15.The price of a bicycle is ₹3740. It goes up by 10%. What is the new price (in ₹)?
  16. 16.A water tank holds 4220 litres. 15% of the water is used. How many litres are left?
  17. 17.A town has 2740 people. Its population grows by 10%. How many people live there now?
  18. 18.A water tank holds 2780 litres. 20% of the water is used. How many litres are left?
  19. 19.The price of a school bag changes from ₹4760 to ₹3332. By what percent did it come down?
  20. 20.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
  21. 21.The price of a school bag changes from ₹2320 to ₹1624. By what percent did it come down?
  22. 22.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
  23. 23.A shop sells 5000 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  24. 24.A shop sells 940 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  25. 25.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  26. 26.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
  27. 27.A town has 1560 people. Its population grows by 30%. How many people live there now?
  28. 28.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
  29. 29.A water tank holds 4040 litres. 25% of the water is used. How many litres are left?
  30. 30.A town has 840 people. Its population grows by 50%. How many people live there now?
  31. 31.A shop sells 2140 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  32. 32.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
  33. 33.A water tank holds 1000 litres. 50% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹2260. It goes up by 30%. What is the new price (in ₹)?
  35. 35.A water tank holds 660 litres. 15% of the water is used. How many litres are left?
  36. 36.A town has 1320 people. Its population grows by 25%. How many people live there now?
  37. 37.A water tank holds 400 litres. 20% of the water is used. How many litres are left?
  38. 38.A water tank holds 1580 litres. 5% of the water is used. How many litres are left?
  39. 39.A town has 1460 people. Its population grows by 25%. How many people live there now?
  40. 40.The price of a school bag changes from ₹2600 to ₹2990. By what percent did it go up?

Answer key

  1. 40
  2. 5
  3. 9.25
  4. 1612
  5. 3222
  6. 15
  7. 3318
  8. 20
  9. 30
  10. 30
  11. 3014
  12. 10
  13. 25
  14. 6870
  15. 4114
  16. 3587
  17. 3014
  18. 2224
  19. 30
  20. 55
  21. 30
  22. 47.5
  23. 7500
  24. 1081
  25. 20.75
  26. 95
  27. 2028
  28. 24
  29. 3030
  30. 1260
  31. 2354
  32. 60
  33. 500
  34. 2938
  35. 561
  36. 1650
  37. 320
  38. 1501
  39. 1825
  40. 15

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