SOLUTION: An investor bought 600 shares of stock, some at $3.75 per share and some at $6.50 per share. If the total cost was $3212.50, how many shares of each stock did the investor buy

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Question 1134087: An investor bought 600 shares of stock, some at $3.75 per share and some at $6.50 per share. If the total cost was $3212.50, how many shares of each stock did the investor buy? (Round to two decimal places if necessary.)


--------- $3.75 per share
----------$6.50 per share
Answer by Shin123(626) About Me  (Show Source):
You can put this solution on YOUR website!
Let x be the # of the $3.75 shares and y be the # of the $6.50 shares. So
system%28x%2By=600%2C3.75x%2B6.5y=3212.5%29
system%283.75x%2B3.75y=2250%2C3.75x%2B6.5y=3212.5%29
-2.75y=-962.5
highlight%28highlight_green%28y=350%29%29 250 are $3.75 shares and 350 are $6.50.