Xiaoming's family is going to decorate their new house. If the two decoration companies A and B cooperate, it will take six weeks to complete. ...

Suppose A's weekly salary is X million, then B is (5.2-6x)/64x+9*(5.2-6x)/6=4.8, and x=6/ 10 B is 4/ 15. If we consider that two weeks of the construction period A is equal to three weeks of B, then the speed of A is 1.5 times that of B, that is, nine weeks.