Question

Mr. Donahue needs 4 1/2 pounds of flour to make 5 loafs of bread. He bought 50 pound bag of flour that costs $64.99. About how much will Mr. Donahue spend on flour for a loaf of bread?

Answer 1

EXPLANATION

Let's see the facts:

Needed--> 4 1/2 pounds of flour

Number of loafs of bread = 5

Amount --> 50 pound bag

Cost -----> $64.99

Let's turn the mix fraction into an improper one:

$4\frac{1}{2}=\frac{9}{2}$

Mr Donahue will spend:

$\frac{\frac{9}{2}}{5}=\frac{9}{10}=0.9\frac{\text{pounds of flour }}{\text{loaf of bread}}$

He needs 9/10 or 0.9 pounds of flour for a loaf of bread

The cost for 0.9 pounds of flour is (Applying the unitary Method):

$\frac{64.99\text{dollars}}{50\text{pounds}}\cdot0.9\text{pounds}=1.2998\cdot0.9=1.17\frac{dollars}{\text{loaf of bread}}$

Answer: Mr. Donahie will spend 1.17 dollars for a loaf of bread