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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 472 · 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.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
  2. 2.A water tank holds 3300 litres. 40% of the water is used. How many litres are left?
  3. 3.The price of a bicycle is ₹4620. It goes up by 25%. What is the new price (in ₹)?
  4. 4.A shop sells 1320 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  5. 5.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹2160 to ₹1080. By what percent did it come down?
  7. 7.The price of a school bag changes from ₹3800 to ₹4180. By what percent did it go up?
  8. 8.A price comes down by 30% and then comes down by 5% more. By what percent has it come down in all? =
  9. 9.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  10. 10.A water tank holds 4780 litres. 40% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹500 to ₹575. By what percent did it go up?
  12. 12.A water tank holds 1880 litres. 40% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹3440 to ₹2580. By what percent did it come down?
  14. 14.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
  15. 15.A town has 1440 people. Its population grows by 30%. How many people live there now?
  16. 16.The price of a bicycle is ₹2360. It goes up by 5%. What is the new price (in ₹)?
  17. 17.The price of a school bag changes from ₹2160 to ₹1944. By what percent did it come down?
  18. 18.A water tank holds 2600 litres. 40% of the water is used. How many litres are left?
  19. 19.A shop sells 2140 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  20. 20.The price of a school bag changes from ₹1980 to ₹1782. By what percent did it come down?
  21. 21.A water tank holds 4860 litres. 25% of the water is used. How many litres are left?
  22. 22.A shop sells 2460 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  23. 23.The price of a school bag changes from ₹1960 to ₹1470. By what percent did it come down?
  24. 24.A water tank holds 80 litres. 25% of the water is used. How many litres are left?
  25. 25.The price of a school bag changes from ₹4080 to ₹2448. By what percent did it come down?
  26. 26.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  27. 27.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  28. 28.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 3300 litres. 10% of the water is used. How many litres are left?
  30. 30.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
  31. 31.A water tank holds 4060 litres. 10% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹3900 to ₹3510. By what percent did it come down?
  33. 33.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  34. 34.A water tank holds 1920 litres. 5% of the water is used. How many litres are left?
  35. 35.A water tank holds 2720 litres. 5% of the water is used. How many litres are left?
  36. 36.A water tank holds 1340 litres. 10% of the water is used. How many litres are left?
  37. 37.A town has 100 people. Its population grows by 10%. How many people live there now?
  38. 38.The price of a bicycle is ₹3840. It goes up by 25%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹3360 to ₹2520. By what percent did it come down?
  40. 40.A shop sells 1900 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?

Answer key

  1. 43
  2. 1980
  3. 5775
  4. 1518
  5. 2
  6. 50
  7. 10
  8. 33.5
  9. 4
  10. 2868
  11. 15
  12. 1128
  13. 25
  14. 26.5
  15. 1872
  16. 2478
  17. 10
  18. 1560
  19. 2568
  20. 10
  21. 3645
  22. 3075
  23. 25
  24. 60
  25. 40
  26. 54
  27. 80
  28. 47
  29. 2970
  30. 42.5
  31. 3654
  32. 10
  33. 46
  34. 1824
  35. 2584
  36. 1206
  37. 110
  38. 4800
  39. 25
  40. 2185

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