Word Problem 4

ocgirl83

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Sep 3, 2005
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How many gallons of pure alcohol should be mixed with 20 gal of a 15% alcohol solution to obtain a mixture that is 25% alcohol?
 

stapel

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Feb 4, 2004
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gallons solution:
15%: ??
pure: x
mix: ??

percent alcohol:
15%: ??
pure: 1
mix: ??

gallons alcohol:
15: ??
pure: (1)(x)
mix: ??

Complete the table. Set the input alcohol amounts equal to the total alcohol in the mix. Solve.

Eliz.
 
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