Well, I forgot about the sales tax. So toss those percentages out. But the Papa John's nearest my college is 1.45 miles away. For reference, let's say the gas price is $2.50. That is $0.125/mile, and in my case, 18 cents in gas money. But for the sake of argument, let's round up to 50 cents to ass in oil changes/repairs/etc. So the driver is receiving already a $1.00 tip in the form of an automatic charge.
One of the main focuses of this discussion would be when is a tip qualified, and there is another lengthy thread about that. I think a tip should be given, but as kutulu said, the better tippers receive faster pizza. In that logic, the poorer tippers have no reason or motivation to tip more as their pizza takes longer.
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Brian Griffin: Ah, if my memory serves me, this is the physics department.
Chris Griffin: That would explain all the gravity.
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