Solve an interesting math problem
Actually, nobody is 9 yuan. Everybody begins to hand in 10 yuan. Later, the waiter gave each person 1 yuan. That is to say, each of them paid 1 1 yuan, and 1 1 multiplied by 3 equals 33 yuan. The boss gave them five yuan. If you give it all, three people * * give 33 MINUS 5.