Question 1078955
 One canned juice drink is 25% orange juice; another is 5% orange juice. How man liters of each should be mixed together in order to get 20L that is 21% orange juice?
How many liters of the 25% orange juice should me in the mixture? 
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orange + orange = orange
0.25x + 0.05(20-x) = 0.21*20
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25x + 5*20 - 5x = 21*20
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20x = 16*20
x = 16L (amt. of 25% mix to use)
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Cheers,
Stan H.
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