Answer:
Step-by-step explanation:
Given
Bob can Paint a fence in 5 hr
so full job can be done in 5 hr
in 1 hr job is done
suppose Jen done the work in x hr
so in 1 hr part of job is done
Also if they combine they can do the job in 2 hr
so in 1 hr
so
b I guess
what is that at the bottom?
8.5 days dfnz haa d nt aaj j tvऋण बन्द ोडॅ हसन धवन