SOLUTION: If I have one canned drink, that is 15% orange juice and another is 10% orange juice. I need 5 liters that have 14% orange juice how many liters will I need of 15% and how many of

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Question 188849: If I have one canned drink, that is 15% orange juice and another is 10% orange juice. I need 5 liters that have 14% orange juice how many liters will I need of 15% and how many of 10%?
Answer by Alan3354(69443) About Me  (Show Source):
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If I have one canned drink, that is 15% orange juice and another is 10% orange juice. I need 5 liters that have 14% orange juice how many liters will I need of 15% and how many of 10%?
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f = 15%, t = 10%
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f*0.15 + t*0.10 = 5*0.14 = 0.7
15f + 10t = 70
f + t = 5 --> t = 5-f
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15f + 10*(5-f) = 70
15f +50-10f = 70
5f = 20
f = 4 liters (of 15%)
t = 1 liter (of 10%)