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How many gallons of a 70% alcohol solution and a 40% alcohol solution must be mixed to get 15 gallons of a 52% alcohol solution?

70% solution: ___ gallons

40% solution: ___ gallons

 Mar 4, 2021
 #1
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15 gallons final soln   52%

x  =  amount of 70%           

(15-x) = amount of 40%

 

amount of ingredients = amount in final soln

 

.70(x)     +    .40 (15-x)          =     .52(15)      solve for 'x' the amount of 70%         then 15% is   15-x

 Mar 4, 2021

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