A recipe for oatmeal raisin cookies calls for #1 2/3# cups of flour to make 4 dozen cookies. How many cups of flour are needed to make 6 dozen cookies?
2 Answers
Explanation:
The key to this question is to find how much flour the recipe needs per dozen, and the you can calculate how much is needed for
So we know that:
So to figure out
The easiest way to understand that rather confusing sentence is for me to show you:
So each dozen needs
Now we'll turn
2.5 cups of flour are needed for 6 dozen cookies.
Explanation:
This solution is found by calculating a ratio between the two volumes of cookies. If you want to increase the volume of cookies to 6 from 4, the ratio would be 4:6.
This ratio means "for every 4 of one thing, there will be 6 of the new thing in the scaled ratio" This can be interpreted into a scaling fraction,
Now that we have a fraction for scaling, it's easy to determine the increase in flour required: