Question 1169315
in 1 hour paints 1/5 and in x hours x/5
the other paints 1/7 in 1 hour and x/7 in x hours.
Together they paint 1 room
so (x/5)+(x/7)=1
multiply by 35
5x+7x=35
x=35/12 hours or 2 11/12 hours