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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 643 · 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 bicycle is ₹820. It goes up by 5%. What is the new price (in ₹)?
  2. 2.A town has 940 people. Its population grows by 50%. How many people live there now?
  3. 3.The price of a school bag changes from ₹1200 to ₹600. By what percent did it come down?
  4. 4.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
  5. 5.A shop sells 3440 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  6. 6.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
  7. 7.The price of a school bag changes from ₹4100 to ₹3895. By what percent did it come down?
  8. 8.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  9. 9.A water tank holds 1060 litres. 5% of the water is used. How many litres are left?
  10. 10.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
  11. 11.A shop sells 760 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  12. 12.A water tank holds 1520 litres. 5% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹4560 to ₹3876. By what percent did it come down?
  14. 14.A shop sells 480 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  15. 15.The price of a bicycle is ₹1000. It goes up by 5%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹4640 to ₹3712. By what percent did it come down?
  17. 17.The price of a school bag changes from ₹4020 to ₹4221. By what percent did it go up?
  18. 18.The price of a school bag changes from ₹4140 to ₹2898. By what percent did it come down?
  19. 19.The price of a school bag changes from ₹3520 to ₹5280. By what percent did it go up?
  20. 20.The price of a bicycle is ₹120. It goes up by 50%. What is the new price (in ₹)?
  21. 21.The price of a school bag changes from ₹1300 to ₹780. By what percent did it come down?
  22. 22.A water tank holds 3360 litres. 40% of the water is used. How many litres are left?
  23. 23.A water tank holds 1620 litres. 5% of the water is used. How many litres are left?
  24. 24.A price goes up by 40% and then comes down by 5%. By what percent has it gone up in all? =
  25. 25.The price of a school bag changes from ₹2180 to ₹1853. By what percent did it come down?
  26. 26.The price of a school bag changes from ₹4820 to ₹3374. By what percent did it come down?
  27. 27.The price of a school bag changes from ₹2880 to ₹3312. By what percent did it go up?
  28. 28.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹3040 to ₹2584. By what percent did it come down?
  30. 30.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 3440 litres. 25% of the water is used. How many litres are left?
  32. 32.A shop sells 100 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  33. 33.A water tank holds 2000 litres. 5% of the water is used. How many litres are left?
  34. 34.A water tank holds 100 litres. 10% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹2980 to ₹4470. By what percent did it go up?
  36. 36.A town has 200 people. Its population grows by 25%. How many people live there now?
  37. 37.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
  38. 38.A town has 3980 people. Its population grows by 5%. How many people live there now?
  39. 39.A water tank holds 220 litres. 40% of the water is used. How many litres are left?
  40. 40.The price of a school bag changes from ₹2280 to ₹3420. By what percent did it go up?

Answer key

  1. 861
  2. 1410
  3. 50
  4. 47.5
  5. 4128
  6. 40
  7. 5
  8. 69
  9. 1007
  10. 35
  11. 950
  12. 1444
  13. 15
  14. 576
  15. 1050
  16. 20
  17. 5
  18. 30
  19. 50
  20. 180
  21. 40
  22. 2016
  23. 1539
  24. 33
  25. 15
  26. 30
  27. 15
  28. 17
  29. 15
  30. 95
  31. 2580
  32. 150
  33. 1900
  34. 90
  35. 50
  36. 250
  37. 4
  38. 4179
  39. 132
  40. 50

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