Question 410571
In one hr jane doe 1/5 the job, paul does 1/6 and peter does 1/x and together they can do 1/2 the job in one hr.
1/5 + 1/6 + 1/x = 1/2
6x+5x+30=15x multiply each side by 30x LCM.
-4x=-30
x=15/2 hrs
.
Ed