Final answer:
To adjust a recipe from 12 to 30 rolls, divide 30 by 12, resulting in a factor of 2.5. Multiply each ingredient by 2.5 to get the amounts needed for 30 rolls.
Step-by-step explanation:
To adjust a recipe that makes 12 rolls to make 30 rolls, you need to determine the multiplication factor. To find this, you divide the desired number of rolls by the original number of rolls that the recipe yields. In this case, it would be:
To adjust a recipe from 12 to 30 rolls, divide 30 by 12, resulting in a factor of 2.5. Multiply each ingredient by 2.5 to get the amounts needed for 30 rolls.
30 (desired rolls) ÷ 12 (original rolls) = 2.5
To adjust a recipe from 12 to 30 rolls, divide 30 by 12, resulting in a factor of 2.5. Multiply each ingredient by 2.5 to get the amounts needed for 30 rolls.
Therefore, you would need to multiply the amount of each ingredient by 2.5 to adjust the recipe to make 30 rolls. The correct answer is A) 2.5.