Problema Solution
For her birthday party Julia mixed together 3 gal. of brand A fruit punch and 9 gal. of brand B. Brand A contains 30% fruit juice and brand B contains 10% fruit juice. What percent of the mixture is fruit juice?
Answer provided by our tutors
let p = the percent of fruit juice in the mix
0.30*3 + 0.10*9 = p*(3 + 9)
by solving we find
p = 0.15 or 15%
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the mix contains 15% of fruit juice.