Sole Mates Inc. is planning a one$-$month campaign for July to promote sales of one of its two shoe products. A total of $$164,000$ has been budgeted for advertising, contests, redeemable coupons, and other promotional activities. The following data have been assembled for their possible usefulness in deciding which of the products to select for the campaign:

$\backslash$table$[[,$Tennis Walking$],[,$Shoes,Shoes$],[$Unit selling price,$$74,$$$81$