SOLUTION: A 30% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get 100 gallons of a 60% solution. How many gallons of the 30% solution and 70% should be

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Question 988732: A 30% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get 100 gallons of a 60% solution. How many gallons of the 30% solution and 70% should be fixed?
Answer by stanbon(75887) About Me  (Show Source):
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A 30% solution of fertilizer is to be mixed with a 70% solution of fertilizer in order to get 100 gallons of a 60% solution. How many gallons of the 30% solution and 70% should be fixed?
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fertil + fertil = fertil
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0.30x + 0.70(100-x) = 0.60*100
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30x + 70*100 - 70x = 60*100
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-40x = -10*100
x = (1/4)*100
x = 25 gallons (amt. of 30% solution needed)
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100-x = 75 gallons (amt. of 70% solution needed)
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Cheers,
Stan H.
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