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A man is making gold and silver rings for sale. He estimated that if x grams...

A man is making gold and silver rings for sale. He estimated that if x grams of gold and y grams of silver are used, the number of rings he can make is

R(x,y) = 67x1/2y3/5

If he's only planning to use 370 grams of metal, how many grams of gold should he use to maximize number of rings?
Round your answer to three decimal places.

Math   Calculus   
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