<PRE><B>Question 1143037</B>
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How many gallons each of 25​% alcohol and 5​% alcohol should be mixed to obtain 20 gal of 16​% ​alcohol?
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H, 25%
L, 5%
T, 16%
M, 20 gallons
v, unknown volume of the H concentration alcohol
M-v, unknown vol of the L conc alc


{{{highlight_green(Hv+L(M-v)=TM)}}}

Solve for v, substitute the given values...</PRE>