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

1 Answer

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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

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