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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 517 · 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.The price of a bicycle is ₹1200. It goes up by 5%. What is the new price (in ₹)?
  3. 3.The price of a bicycle is ₹980. It goes up by 20%. What is the new price (in ₹)?
  4. 4.A water tank holds 2800 litres. 25% of the water is used. How many litres are left?
  5. 5.The price of a school bag changes from ₹4180 to ₹4807. By what percent did it go up?
  6. 6.A shop sells 2200 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  7. 7.The price of a school bag changes from ₹560 to ₹504. By what percent did it come down?
  8. 8.A water tank holds 100 litres. 40% of the water is used. How many litres are left?
  9. 9.A shop sells 1980 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  10. 10.A town has 1360 people. Its population grows by 10%. How many people live there now?
  11. 11.The price of a bicycle is ₹3740. It goes up by 5%. What is the new price (in ₹)?
  12. 12.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
  13. 13.The price of a school bag changes from ₹3620 to ₹4525. By what percent did it go up?
  14. 14.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  15. 15.The price of a school bag changes from ₹180 to ₹162. By what percent did it come down?
  16. 16.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  17. 17.A town has 3040 people. Its population grows by 25%. How many people live there now?
  18. 18.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
  19. 19.A water tank holds 2300 litres. 15% of the water is used. How many litres are left?
  20. 20.A water tank holds 3120 litres. 10% of the water is used. How many litres are left?
  21. 21.The price of a school bag changes from ₹2560 to ₹3328. By what percent did it go up?
  22. 22.The price of a school bag changes from ₹3240 to ₹4212. By what percent did it go up?
  23. 23.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
  24. 24.A town has 3320 people. Its population grows by 50%. How many people live there now?
  25. 25.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
  26. 26.A shop sells 4880 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  27. 27.A water tank holds 1480 litres. 20% of the water is used. How many litres are left?
  28. 28.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
  29. 29.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
  30. 30.A price goes up by 25% 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 ₹2860 to ₹3146. By what percent did it go up?
  32. 32.A water tank holds 2820 litres. 30% of the water is used. How many litres are left?
  33. 33.A town has 2100 people. Its population grows by 30%. How many people live there now?
  34. 34.A shop sells 240 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  35. 35.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
  36. 36.A water tank holds 2200 litres. 5% of the water is used. How many litres are left?
  37. 37.The price of a school bag changes from ₹1040 to ₹1092. By what percent did it go up?
  38. 38.The price of a school bag changes from ₹1320 to ₹1980. By what percent did it go up?
  39. 39.The price of a school bag changes from ₹2960 to ₹3108. By what percent did it go up?
  40. 40.A water tank holds 2420 litres. 30% of the water is used. How many litres are left?

Answer key

  1. 14
  2. 1260
  3. 1176
  4. 2100
  5. 15
  6. 2420
  7. 10
  8. 60
  9. 2970
  10. 1496
  11. 3927
  12. 80
  13. 25
  14. 43
  15. 10
  16. 70
  17. 3800
  18. 46
  19. 1955
  20. 2808
  21. 30
  22. 30
  23. 14.5
  24. 4980
  25. 38
  26. 5124
  27. 1184
  28. 125
  29. 57.5
  30. 62.5
  31. 10
  32. 1974
  33. 2730
  34. 312
  35. 52.5
  36. 2090
  37. 5
  38. 50
  39. 5
  40. 1694

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