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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 991 · 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 25% and then goes up by 5% more. By what percent has it gone up in all? =
  2. 2.The price of a bicycle is ₹3940. It goes up by 10%. What is the new price (in ₹)?
  3. 3.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
  4. 4.A town has 4400 people. Its population grows by 40%. How many people live there now?
  5. 5.A price goes up by 30% and then goes up by 5% more. By what percent has it gone up in all? =
  6. 6.A town has 3100 people. Its population grows by 15%. How many people live there now?
  7. 7.A town has 4820 people. Its population grows by 40%. How many people live there now?
  8. 8.A shop sells 1300 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 4380 litres. 25% of the water is used. How many litres are left?
  10. 10.A water tank holds 3640 litres. 40% of the water is used. How many litres are left?
  11. 11.A town has 4840 people. Its population grows by 5%. How many people live there now?
  12. 12.A water tank holds 3080 litres. 20% of the water is used. How many litres are left?
  13. 13.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
  14. 14.The price of a school bag changes from ₹4040 to ₹2424. By what percent did it come down?
  15. 15.A shop sells 1340 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  16. 16.The price of a school bag changes from ₹920 to ₹460. By what percent did it come down?
  17. 17.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹3480 to ₹2784. By what percent did it come down?
  19. 19.The price of a school bag changes from ₹4820 to ₹4579. By what percent did it come down?
  20. 20.The price of a school bag changes from ₹3920 to ₹4508. By what percent did it go up?
  21. 21.A shop sells 3980 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  22. 22.The price of a bicycle is ₹660. It goes up by 20%. What is the new price (in ₹)?
  23. 23.A price comes down by 10% and then comes down by 30% more. By what percent has it come down in all? =
  24. 24.A water tank holds 4680 litres. 25% of the water is used. How many litres are left?
  25. 25.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
  26. 26.A water tank holds 4400 litres. 20% of the water is used. How many litres are left?
  27. 27.A town has 360 people. Its population grows by 20%. How many people live there now?
  28. 28.The price of a school bag changes from ₹4060 to ₹5075. By what percent did it go up?
  29. 29.A price goes up by 15% and then goes up by 20% more. By what percent has it gone up in all? =
  30. 30.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
  31. 31.A water tank holds 3440 litres. 25% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹2540 to ₹1524. By what percent did it come down?
  33. 33.A water tank holds 3560 litres. 20% of the water is used. How many litres are left?
  34. 34.A water tank holds 4560 litres. 40% of the water is used. How many litres are left?
  35. 35.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  36. 36.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  37. 37.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  38. 38.The price of a bicycle is ₹4320. It goes up by 5%. What is the new price (in ₹)?
  39. 39.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
  40. 40.A town has 4360 people. Its population grows by 50%. How many people live there now?

Answer key

  1. 31.25
  2. 4334
  3. 43
  4. 6160
  5. 36.5
  6. 3565
  7. 6748
  8. 1495
  9. 3285
  10. 2184
  11. 5082
  12. 2464
  13. 54
  14. 40
  15. 1675
  16. 50
  17. 32
  18. 20
  19. 5
  20. 15
  21. 5174
  22. 792
  23. 37
  24. 3510
  25. 57.5
  26. 3520
  27. 432
  28. 25
  29. 38
  30. 46
  31. 2580
  32. 40
  33. 2848
  34. 2736
  35. 49.5
  36. 43.75
  37. 44
  38. 4536
  39. 6.25
  40. 6540

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