SOLUTION: An orange drink contains 20% orange juice. How much of this drink should be mixed with pure orange juice in order to produce 8 quarts of an orange drink that is 70% orange juice?

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Question 879136: An orange drink contains 20% orange juice. How much of this drink should be mixed with pure orange juice in order to produce 8 quarts of an orange drink that is 70% orange juice?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
You could assign variables like this:

L = 20%
H = 100%, the pure orange juice
T = 70%
M = 8
u = unknown amount of the 20%-juice drink, quarts
v = unknown amount of pure orange juice

highlight_green%28%28Lu%2BHv%29%2FM=T%29 and highlight_green%28u%2Bv=M%29

Refer to this lesson:
Mixing two concentrations for known amount of mixture