SOLUTION: How many pounds of water must be added to 48 pounds of alcohol to make a solution that is 25 percent alcohol.

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Question 1043073: How many pounds of water must be added to 48 pounds of alcohol to make a solution that is 25 percent alcohol.
Answer by ikleyn(52787) About Me  (Show Source):
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How many pounds of water must be added to 48 pounds of alcohol to make a solution that is 25 percent alcohol.
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48%2F%2848%2Bw%29 = 0.25,

48 = 0.25*(48+w),

48 = 12 + 0.25w,

0.25w = 48 - 12,

0.25w = 36,

w = 36%2F0.25 = 144 pounds.

Check.  48%2F%2848%2B144%29 = o.25.  Checked !

Answer. 144 pounds of water.