In the 3-month period November 1, 2014, through January 31, 2015, Hess Corp. (HES) stock decreased from $80 to $64 per share, and Exxon Mobil (XOM) stock decreased from $96 to $80 per share.† If you invested a total of $20,480 in these stocks at the beginning of November and sold them for $16,640 3 months later, how many shares of each stock did you buy?

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