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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 604 · 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 ₹1940 to ₹2425. By what percent did it go up?
  2. 2.A water tank holds 620 litres. 40% of the water is used. How many litres are left?
  3. 3.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  4. 4.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹3340 to ₹3173. By what percent did it come down?
  6. 6.A water tank holds 4800 litres. 25% of the water is used. How many litres are left?
  7. 7.The price of a school bag changes from ₹3700 to ₹3330. By what percent did it come down?
  8. 8.The price of a school bag changes from ₹2240 to ₹1792. By what percent did it come down?
  9. 9.The price of a school bag changes from ₹2040 to ₹1734. By what percent did it come down?
  10. 10.A price goes up by 25% and then goes up by 5% more. By what percent has it gone up in all? =
  11. 11.A town has 3080 people. Its population grows by 10%. How many people live there now?
  12. 12.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹5000 to ₹4500. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹3200 to ₹3840. By what percent did it go up?
  15. 15.A shop sells 3920 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  16. 16.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  17. 17.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  18. 18.A shop sells 80 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  19. 19.A water tank holds 1120 litres. 25% of the water is used. How many litres are left?
  20. 20.A water tank holds 1720 litres. 25% of the water is used. How many litres are left?
  21. 21.A shop sells 1820 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  22. 22.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
  23. 23.The price of a school bag changes from ₹1880 to ₹2068. By what percent did it go up?
  24. 24.A water tank holds 2120 litres. 25% of the water is used. How many litres are left?
  25. 25.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
  26. 26.A town has 780 people. Its population grows by 15%. How many people live there now?
  27. 27.A water tank holds 2840 litres. 10% of the water is used. How many litres are left?
  28. 28.A water tank holds 180 litres. 10% of the water is used. How many litres are left?
  29. 29.A water tank holds 560 litres. 25% of the water is used. How many litres are left?
  30. 30.The price of a school bag changes from ₹4840 to ₹5082. By what percent did it go up?
  31. 31.A water tank holds 180 litres. 40% of the water is used. How many litres are left?
  32. 32.A town has 960 people. Its population grows by 20%. How many people live there now?
  33. 33.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  34. 34.The price of a school bag changes from ₹4260 to ₹5964. By what percent did it go up?
  35. 35.A water tank holds 3900 litres. 5% of the water is used. How many litres are left?
  36. 36.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
  37. 37.A shop sells 2380 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  38. 38.The price of a bicycle is ₹4960. It goes up by 20%. What is the new price (in ₹)?
  39. 39.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
  40. 40.The price of a school bag changes from ₹3900 to ₹2340. By what percent did it come down?

Answer key

  1. 25
  2. 372
  3. 70
  4. 26.5
  5. 5
  6. 3600
  7. 10
  8. 20
  9. 15
  10. 31.25
  11. 3388
  12. 19
  13. 10
  14. 20
  15. 4704
  16. 37
  17. 50
  18. 104
  19. 840
  20. 1290
  21. 2548
  22. 27.75
  23. 10
  24. 1590
  25. 40.5
  26. 897
  27. 2556
  28. 162
  29. 420
  30. 5
  31. 108
  32. 1152
  33. 47
  34. 40
  35. 3705
  36. 31.25
  37. 3332
  38. 5952
  39. 19.25
  40. 40

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