SOLUTION: Of the following choices of dog food, which bag is the cheapest in cost per pound of protein? Bag Price Weight Percent Protein A $5.00 5.0 lbs 15% B

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Question 1064418: Of the following choices of dog food, which bag is the cheapest in cost per pound of protein?
Bag Price Weight Percent Protein
A $5.00 5.0 lbs 15%
B $6.75 5.0 lbs 19%
C $7.50 5.0 lbs 23%
D $8.25 5.0 lbs 25%
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
you want to find the cost per pound of protein.

A. cost per pound of protein = 5.00 / (.15 * 5) = 6.67
B. cost per pound of protein = 6.75 / (.19 * 5) = 7.11
C. cost per pound of protein = 7.5 / (.23 * 5) = 6.52
D. cost per pound of protein = 8.,25 / (.25 * 5) = 6.6

looks like selection C is the winner.

you multiply the nunmber of pounds of dog food by the percent protein to get the number of pounds of protein.

you then divide the price by the number of pounds of protein.

the formulas above do that in one shot.