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Elvin is trying to make chocolate milk that is 15% chocolate syrup. How many gallons of chocolate milk that is 20% chocolate syrup does he need to mix with half a gallon of chocolate milk that is 12% chocolate syrup to make his desired drink?

 Mar 3, 2020
 #1
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Let G  be  the  20%   mixture  we need

 

We  have  this equation

 

.20G  + (.12)  (1/2)   =  (.15) (G + 1/2)        simplify

 

.2G  + .06   =  .15G  + .075        subtract  .15G,  .06  from  both  sides

 

.05G   =  .015        divide  both sides  bu  .05

 

G  = 015 / 05 =    ,3  gal of the  20% mixture   

 

 

cool cool cool

 Mar 3, 2020

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