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Dog food selling for $0.50 per pound is to be mixed with a high protein blend selling for $1.50 per pound. How many pounds of the high protein blend are needed to produce a 50 pound mixture that sells for $1.25 per pound.

 Feb 27, 2020
 #1
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Let x  be  the lbs of the cheaper food

Then 50 - x  = the lbs of themore expensive food

We can solve this

 

.50 x  + 1.50 (50 - x)  =  1.25 * 50

 

.50x  + 75  - 1.50x  =  62.5     

 

-x  + 75  = 62.5     subtract  75 from both sides

 

-x = -12.5    divide both sides by -1

 

x=  12.5

 

So....the lbs of the more expensive food used=  50 - 12.5  = 37.5

 

 

cool cool cool

 Feb 27, 2020

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