SOLUTION: A certain metal is 50% tin. How many kilograms of this metal should be mixed with 70% of 85 kilograms tin to produce a 65% metal?

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Question 1114271: A certain metal is 50% tin. How many kilograms of this metal should be mixed with 70% of 85 kilograms tin to produce a 65% metal?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Q, the amount of the 50% tin asked for

Sum of the masses of tin from the two parts equals to mass of tin in the blend.

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