Required Mathematical Intelligence

Chapter 5
There is a pile of rubbish, and it is stipulated that the three families of Zhang, Wang and Li should clean it up.Zhang Hu was unable to participate because he was out, so he left 9 yuan as a substitute fee.Wang Hu got up early in the morning and worked for 5 hours, and Li Hu continued to work for 4 hours in the afternoon and just finished.How should Wang Hu and Li Hu distribute the 9 yuan?

[Answer: You cannot simply think that Wang Hu deserves 5 yuan and Li Hu deserves 4 yuan.Taking things for granted without analysis often makes mistakes.It should be known that in the work done by Wang and Li, apart from helping Zhang, they also have their own tasks.Obviously, the workload per household is 3 hours.Wang helped Zhang work for 2 hours, and Li helped Zhang work for 1 hour. The workload of Wang Bangzhang was twice that of Li Bangzhang, and the salary he got should of course be twice that of Li.Therefore, Wang should get 2 dollars and Li should get 2 dollars. ]
(End of this chapter)