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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 548 · 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 ₹100 to ₹90. By what percent did it come down?
  2. 2.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  3. 3.A town has 1900 people. Its population grows by 50%. How many people live there now?
  4. 4.A water tank holds 3400 litres. 20% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹2460 to ₹2337. By what percent did it come down?
  6. 6.A water tank holds 2700 litres. 15% of the water is used. How many litres are left?
  7. 7.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  8. 8.A shop sells 2020 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  9. 9.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  11. 11.The price of a school bag changes from ₹3980 to ₹3383. By what percent did it come down?
  12. 12.The price of a bicycle is ₹520. It goes up by 50%. What is the new price (in ₹)?
  13. 13.A water tank holds 2060 litres. 50% of the water is used. How many litres are left?
  14. 14.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  15. 15.The price of a school bag changes from ₹4620 to ₹5313. By what percent did it go up?
  16. 16.A water tank holds 1840 litres. 50% of the water is used. How many litres are left?
  17. 17.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
  18. 18.A water tank holds 1100 litres. 15% of the water is used. How many litres are left?
  19. 19.A town has 660 people. Its population grows by 25%. How many people live there now?
  20. 20.The price of a school bag changes from ₹4280 to ₹3638. By what percent did it come down?
  21. 21.A water tank holds 3020 litres. 30% of the water is used. How many litres are left?
  22. 22.A water tank holds 2640 litres. 40% of the water is used. How many litres are left?
  23. 23.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  24. 24.The price of a school bag changes from ₹460 to ₹552. By what percent did it go up?
  25. 25.The price of a school bag changes from ₹1200 to ₹1080. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹4420 to ₹2652. By what percent did it come down?
  27. 27.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹160 to ₹168. By what percent did it go up?
  29. 29.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  30. 30.The price of a bicycle is ₹2260. It goes up by 50%. What is the new price (in ₹)?
  31. 31.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  32. 32.The price of a school bag changes from ₹1440 to ₹1224. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹2400 to ₹2040. By what percent did it come down?
  34. 34.A water tank holds 1540 litres. 15% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹1360 to ₹1224. By what percent did it come down?
  36. 36.A water tank holds 2620 litres. 20% of the water is used. How many litres are left?
  37. 37.A shop sells 4080 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  38. 38.A water tank holds 2300 litres. 5% of the water is used. How many litres are left?
  39. 39.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
  40. 40.A shop sells 4500 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?

Answer key

  1. 10
  2. 61
  3. 2850
  4. 2720
  5. 5
  6. 2295
  7. 42.5
  8. 2222
  9. 72.5
  10. 26.5
  11. 15
  12. 780
  13. 1030
  14. 27.75
  15. 15
  16. 920
  17. 12
  18. 935
  19. 825
  20. 15
  21. 2114
  22. 1584
  23. 47
  24. 20
  25. 10
  26. 40
  27. 15.5
  28. 5
  29. 125
  30. 3390
  31. 40.5
  32. 15
  33. 15
  34. 1309
  35. 10
  36. 2096
  37. 4284
  38. 2185
  39. 110
  40. 4950

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