Tatum

11/22/09
According to last friday, we had to figure the question out. So, I now come out with an idea. In that case, they paid 250 dollars. But they got 50 dollars back. Then they gave 20 dollars for the tips, and the total that they paid is 270 dollars.
Eventually, they only paid 270 / 3 = 90 dollars each persons. The consequences for this question are $ 90 from each, and they kept $ 10 to themselves.