SOLUTION: ten fluid ounces of a fruit drink is 90% juice. how many fluid ounces of water must be added to dilute the mixture to 50% juice?

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Question 259558: ten fluid ounces of a fruit drink is 90% juice. how many fluid ounces of water must be added to dilute the mixture to 50% juice?
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
This is a mixture problem. Here is a chart based on the information. The thing to remember is that water is 0% fruit drink.
fluid . . . . . . . . % . . . . . . . . . .ounces . . . . . . . .. %*ounces
fruit . . . . . . . .90 . . . . . . .. . . . .10 . . . .. . . . . . .. 900
water . . . . . . .0 . . . . . .. . . . . .. X . . . . .. . . . . . . .0
mixture . . . . . 50 . . . . . .. . . .. . 10+X . . .. . . . . . .500 + 50X
set
900 + 0 = 500 + 50X
subtract 500 to get
400 = 50x
divide to get
8 = x.
It takes 8 ounces of water to get 50%.