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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 752 · 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 water tank holds 3240 litres. 5% of the water is used. How many litres are left?
  2. 2.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
  3. 3.The price of a school bag changes from ₹3060 to ₹2601. By what percent did it come down?
  4. 4.A water tank holds 4960 litres. 50% of the water is used. How many litres are left?
  5. 5.A shop sells 1600 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  6. 6.A shop sells 2700 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  7. 7.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  8. 8.The price of a bicycle is ₹900. It goes up by 10%. What is the new price (in ₹)?
  9. 9.The price of a school bag changes from ₹3180 to ₹2862. By what percent did it come down?
  10. 10.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  11. 11.A water tank holds 3640 litres. 10% of the water is used. How many litres are left?
  12. 12.The price of a school bag changes from ₹1960 to ₹1568. By what percent did it come down?
  13. 13.The price of a school bag changes from ₹900 to ₹1350. By what percent did it go up?
  14. 14.A water tank holds 3520 litres. 5% of the water is used. How many litres are left?
  15. 15.The price of a school bag changes from ₹100 to ₹130. By what percent did it go up?
  16. 16.The price of a school bag changes from ₹420 to ₹504. By what percent did it go up?
  17. 17.The price of a bicycle is ₹3460. It goes up by 25%. What is the new price (in ₹)?
  18. 18.A water tank holds 4500 litres. 50% of the water is used. How many litres are left?
  19. 19.The price of a bicycle is ₹400. It goes up by 20%. What is the new price (in ₹)?
  20. 20.The price of a school bag changes from ₹3520 to ₹4576. By what percent did it go up?
  21. 21.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  22. 22.A shop sells 200 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  23. 23.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  24. 24.A town has 1460 people. Its population grows by 10%. How many people live there now?
  25. 25.A shop sells 4000 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 2740 litres. 25% of the water is used. How many litres are left?
  27. 27.A water tank holds 3040 litres. 25% of the water is used. How many litres are left?
  28. 28.The price of a bicycle is ₹3540. It goes up by 15%. What is the new price (in ₹)?
  29. 29.A water tank holds 60 litres. 50% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹1960 to ₹2940. By what percent did it go up?
  31. 31.A water tank holds 60 litres. 30% of the water is used. How many litres are left?
  32. 32.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
  33. 33.The price of a bicycle is ₹3040. It goes up by 40%. What is the new price (in ₹)?
  34. 34.The price of a bicycle is ₹2000. It goes up by 30%. What is the new price (in ₹)?
  35. 35.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  36. 36.A water tank holds 2280 litres. 5% of the water is used. How many litres are left?
  37. 37.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹340 to ₹476. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹2360 to ₹1888. By what percent did it come down?
  40. 40.The price of a school bag changes from ₹200 to ₹160. By what percent did it come down?

Answer key

  1. 3078
  2. 72.5
  3. 15
  4. 2480
  5. 1760
  6. 3780
  7. 14.5
  8. 990
  9. 10
  10. 96
  11. 3276
  12. 20
  13. 50
  14. 3344
  15. 30
  16. 20
  17. 4325
  18. 2250
  19. 480
  20. 30
  21. 26.5
  22. 240
  23. 19
  24. 1606
  25. 6000
  26. 2055
  27. 2280
  28. 4071
  29. 30
  30. 50
  31. 42
  32. 8
  33. 4256
  34. 2600
  35. 55
  36. 2166
  37. 26
  38. 40
  39. 20
  40. 20

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