You are the owner of a gourmet diner. On Wednesday nights, you offer a special of "Buy one dinner, get one free dinner-of equal or lesser value." Michael and Wayne come in for the special. Michael...

Extracted text: You are the owner of a gourmet diner. On Wednesday nights, you offer a special of "Buy one dinner, get one free dinner-of equal or lesser value." Michael and Wayne come in for the special. Michael chooses chicken Parmesan for $28, and Wayne chooses a $21 barbecue-combo platter. (a) Excluding tax and tip, how much (in $) should each pay for his proportional share of the check? Michael Wayne $ (b) If sales tax and tip amount to of the original total of the two dinners, how much is that (in $)? (c) If they decide to split the tax and tip in the same ratio as the dinners, how much more (in $) does each owe? Michael $ Wayne $