What if we look at it this way?

300 yuan was returned to 50 yuan and 250 yuan. 250/3=83.33333333 ...

Now, after deducting 20 yuan, each waiter gets 65,438+00 yuan, and each person spends 83.33+65,438+00 = 93. 39986.8886888866 1

93.3333X3=280+20=300。 . . Money makes no difference.

There is a problem of stealing concepts. Similar to the mathematical proof of 4=3. Let's assume that A+B= 1 to 4+3=7.

Change the concept and you can get 4=3. .

Everyone paid 100 yuan. Refund 10 yuan =90 yuan. But it is not practical. They should be 250 yuan /3+ 10=93.333 yuan.

That's what math is like. Very interesting.