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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 624 · 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 ₹4080. It goes up by 30%. What is the new price (in ₹)?
  2. 2.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
  3. 3.A shop sells 2660 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  4. 4.A water tank holds 1460 litres. 30% of the water is used. How many litres are left?
  5. 5.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
  6. 6.The price of a school bag changes from ₹1340 to ₹1407. By what percent did it go up?
  7. 7.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
  8. 8.A shop sells 4660 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
  9. 9.A water tank holds 2340 litres. 15% of the water is used. How many litres are left?
  10. 10.A water tank holds 480 litres. 20% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹1200 to ₹1080. By what percent did it come down?
  12. 12.The price of a bicycle is ₹3700. It goes up by 5%. What is the new price (in ₹)?
  13. 13.The price of a school bag changes from ₹760 to ₹722. By what percent did it come down?
  14. 14.A water tank holds 2240 litres. 30% of the water is used. How many litres are left?
  15. 15.The price of a bicycle is ₹4520. It goes up by 40%. What is the new price (in ₹)?
  16. 16.The price of a school bag changes from ₹2360 to ₹2006. By what percent did it come down?
  17. 17.The price of a bicycle is ₹3980. It goes up by 30%. What is the new price (in ₹)?
  18. 18.The price of a school bag changes from ₹4980 to ₹4233. By what percent did it come down?
  19. 19.A water tank holds 3200 litres. 10% of the water is used. How many litres are left?
  20. 20.A water tank holds 3940 litres. 20% of the water is used. How many litres are left?
  21. 21.A water tank holds 3860 litres. 10% of the water is used. How many litres are left?
  22. 22.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  23. 23.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
  24. 24.A water tank holds 1720 litres. 25% of the water is used. How many litres are left?
  25. 25.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  26. 26.The price of a school bag changes from ₹4360 to ₹3488. By what percent did it come down?
  27. 27.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
  28. 28.The price of a school bag changes from ₹60 to ₹78. By what percent did it go up?
  29. 29.The price of a school bag changes from ₹1400 to ₹1330. By what percent did it come down?
  30. 30.The price of a school bag changes from ₹4180 to ₹2090. By what percent did it come down?
  31. 31.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
  32. 32.A shop sells 1060 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  33. 33.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
  34. 34.A town has 1140 people. Its population grows by 50%. How many people live there now?
  35. 35.A water tank holds 3920 litres. 40% of the water is used. How many litres are left?
  36. 36.The price of a bicycle is ₹2540. It goes up by 10%. What is the new price (in ₹)?
  37. 37.The price of a school bag changes from ₹3000 to ₹1800. By what percent did it come down?
  38. 38.A water tank holds 3400 litres. 40% of the water is used. How many litres are left?
  39. 39.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
  40. 40.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =

Answer key

  1. 5304
  2. 21
  3. 3990
  4. 1022
  5. 96
  6. 5
  7. 52
  8. 5359
  9. 1989
  10. 384
  11. 10
  12. 3885
  13. 5
  14. 1568
  15. 6328
  16. 15
  17. 5174
  18. 15
  19. 2880
  20. 3152
  21. 3474
  22. 57.5
  23. 26
  24. 1290
  25. 56.25
  26. 20
  27. 49
  28. 30
  29. 5
  30. 50
  31. 65
  32. 1590
  33. 61
  34. 1710
  35. 2352
  36. 2794
  37. 40
  38. 2040
  39. 9.25
  40. 28

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