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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 966 · 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 20% and then comes down by 5%. By what percent has it gone up in all? =
  2. 2.A water tank holds 4880 litres. 40% of the water is used. How many litres are left?
  3. 3.A water tank holds 3360 litres. 40% of the water is used. How many litres are left?
  4. 4.The price of a school bag changes from ₹1240 to ₹1054. By what percent did it come down?
  5. 5.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  6. 6.A water tank holds 2660 litres. 50% of the water is used. How many litres are left?
  7. 7.A town has 1000 people. Its population grows by 15%. How many people live there now?
  8. 8.The price of a school bag changes from ₹860 to ₹1290. By what percent did it go up?
  9. 9.A water tank holds 4040 litres. 25% of the water is used. How many litres are left?
  10. 10.The price of a school bag changes from ₹1400 to ₹1960. By what percent did it go up?
  11. 11.The price of a bicycle is ₹1040. It goes up by 50%. What is the new price (in ₹)?
  12. 12.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  13. 13.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
  14. 14.A town has 620 people. Its population grows by 20%. How many people live there now?
  15. 15.The price of a school bag changes from ₹1780 to ₹2314. By what percent did it go up?
  16. 16.A town has 1360 people. Its population grows by 10%. How many people live there now?
  17. 17.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  18. 18.A water tank holds 1680 litres. 25% of the water is used. How many litres are left?
  19. 19.A shop sells 3740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  20. 20.A water tank holds 2280 litres. 5% of the water is used. How many litres are left?
  21. 21.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  22. 22.A water tank holds 3260 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 20% more. By what percent has it gone up in all? =
  24. 24.A price goes up by 5% and then goes up by 30% more. By what percent has it gone up in all? =
  25. 25.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹3920 to ₹2744. By what percent did it come down?
  27. 27.A price comes down by 30% and then comes down by 30% more. By what percent has it come down in all? =
  28. 28.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  29. 29.A water tank holds 4600 litres. 40% of the water is used. How many litres are left?
  30. 30.A water tank holds 1900 litres. 20% of the water is used. How many litres are left?
  31. 31.The price of a school bag changes from ₹3260 to ₹3749. By what percent did it go up?
  32. 32.A shop sells 380 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  33. 33.The price of a school bag changes from ₹620 to ₹465. By what percent did it come down?
  34. 34.The price of a school bag changes from ₹2520 to ₹2646. By what percent did it go up?
  35. 35.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  36. 36.A shop sells 1040 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  37. 37.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  38. 38.A water tank holds 1300 litres. 25% of the water is used. How many litres are left?
  39. 39.A price comes down by 25% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.A water tank holds 3380 litres. 20% of the water is used. How many litres are left?

Answer key

  1. 14
  2. 2928
  3. 2016
  4. 15
  5. 27.75
  6. 1330
  7. 1150
  8. 50
  9. 3030
  10. 40
  11. 1560
  12. 14.5
  13. 20
  14. 744
  15. 30
  16. 1496
  17. 70
  18. 1260
  19. 4114
  20. 2166
  21. 9.75
  22. 1956
  23. 26
  24. 36.5
  25. 62.5
  26. 30
  27. 51
  28. 54
  29. 2760
  30. 1520
  31. 15
  32. 532
  33. 25
  34. 5
  35. 70
  36. 1352
  37. 38
  38. 975
  39. 43.75
  40. 2704

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