SOLUTION: if i have a acid solution at 5 % concentration and another one at 10% concentration how much of each solution do I need to obtain 50ml at 9% concentration

Question 663776: if i have a acid solution at 5 % concentration and another one at 10% concentration how much of each solution do I need to obtain 50ml at 9% concentration
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
if i have a acid solution at 5 % concentration and another one at 10% concentration how much of each solution do I need to obtain 50ml at 9% concentration
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f = amount of 5%
t = amount of 10%
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f + t = 50 (total solution)
5f + 10t = 50*9 (% acid)
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