Question

Thomas used 6.38 cups of flour to make 2 3/5 pounds of banana bread. how much flour was used per pound?

Answer 1

You have the following Mixed number:

`2(3)/(5)`

In order to write it as a Decimal number, you need to divide the numerator 3 by the denominator 5 and then you must add the result to the Whole number 2. Therefore:

`2(3)/(5)=2+0.6=2.6`

Let be "c" the number of cups of flour that was used per pound.

Now you can set up the following proportion:

`(6.38)/(2.6)=(c)/(1)`

Solving for "c", you get:

`\begin{gathered} (6.38)/(2.6)=c \\ \\ c=2.45 \end{gathered}`

The answer is:

`2.45\text{ }cups`