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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 533 · 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 ₹2580 to ₹2322. By what percent did it come down?
  2. 2.A town has 2880 people. Its population grows by 15%. How many people live there now?
  3. 3.A town has 1100 people. Its population grows by 40%. How many people live there now?
  4. 4.The price of a school bag changes from ₹2900 to ₹2465. By what percent did it come down?
  5. 5.A shop sells 1520 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  6. 6.The price of a school bag changes from ₹780 to ₹468. By what percent did it come down?
  7. 7.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  8. 8.The price of a school bag changes from ₹3520 to ₹2640. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹860 to ₹602. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹760 to ₹836. By what percent did it go up?
  11. 11.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  12. 12.The price of a school bag changes from ₹2080 to ₹1040. By what percent did it come down?
  13. 13.A water tank holds 4380 litres. 50% of the water is used. How many litres are left?
  14. 14.The price of a bicycle is ₹680. It goes up by 30%. What is the new price (in ₹)?
  15. 15.A town has 2100 people. Its population grows by 30%. How many people live there now?
  16. 16.The price of a school bag changes from ₹80 to ₹96. By what percent did it go up?
  17. 17.A water tank holds 860 litres. 15% of the water is used. How many litres are left?
  18. 18.The price of a school bag changes from ₹1880 to ₹1974. By what percent did it go up?
  19. 19.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  20. 20.A water tank holds 1040 litres. 5% of the water is used. How many litres are left?
  21. 21.The price of a bicycle is ₹580. It goes up by 50%. What is the new price (in ₹)?
  22. 22.A water tank holds 3040 litres. 5% of the water is used. How many litres are left?
  23. 23.A shop sells 600 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  24. 24.A shop sells 120 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  25. 25.A water tank holds 1260 litres. 25% of the water is used. How many litres are left?
  26. 26.The price of a school bag changes from ₹1040 to ₹728. By what percent did it come down?
  27. 27.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  28. 28.A water tank holds 3280 litres. 20% of the water is used. How many litres are left?
  29. 29.A water tank holds 4520 litres. 10% of the water is used. How many litres are left?
  30. 30.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹2060 to ₹2472. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹2740 to ₹2055. By what percent did it come down?
  33. 33.A town has 2460 people. Its population grows by 25%. How many people live there now?
  34. 34.The price of a school bag changes from ₹1200 to ₹1800. By what percent did it go up?
  35. 35.A shop sells 4000 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  36. 36.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
  37. 37.A price comes down by 5% and then comes down by 40% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹1300. It goes up by 20%. What is the new price (in ₹)?
  39. 39.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹3260 to ₹1630. By what percent did it come down?

Answer key

  1. 10
  2. 3312
  3. 1540
  4. 15
  5. 1976
  6. 40
  7. 46
  8. 25
  9. 30
  10. 10
  11. 69
  12. 50
  13. 2190
  14. 884
  15. 2730
  16. 20
  17. 731
  18. 5
  19. 32
  20. 988
  21. 870
  22. 2888
  23. 660
  24. 138
  25. 945
  26. 30
  27. 31.25
  28. 2624
  29. 4068
  30. 49.5
  31. 20
  32. 25
  33. 3075
  34. 50
  35. 5200
  36. 19.25
  37. 43
  38. 1560
  39. 62.5
  40. 50

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