How many gallons of pure alcohol should be mixed with 20 galof a 15% alcohol to

Question

How many gallons of pure alcohol should be mixed with 20 galof a 15% alcohol to obtain a mixture that is 25% alcohol? Strength Gal Gal of pure alcohol 15% 20 .15(20) 100% x 1(x) 25% 20+x .25(20+x) x+.15(20)=.25(20+x) x+3=5+.25x x=2+.25x Am I correct on this? Thanks! Strength Gal Gal of pure alcohol 15% 20 .15(20) 100% x 1(x) 25% 20+x .25(20+x) How many gallons of pure alcohol should be mixed with 20 galof a 15% alcohol to obtain a mixture that is 25% alcohol? x+.15(20)=.25(20+x) x+3=5+.25x x=2+.25x x=2/.75 x=2/3/4 x=8/3 or 2.66 gal Am I correct on this? Thanks!

Explanation / Answer

u r correct...am also getting the same answer ..

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