Question

a,b,c can do a work 18,24,27 days.they started the work together but c left after 7days and b 4days before the completion days in what time is the work finished​

Answer 1

Step-by-step explanation:

man where did u find this question!!!!!!!!! it was very very hard for me T-T

btw, hope it helps u (*cries in Korean*) (*우네요*)