Question

Sue can paint 1/4th of the wall in an hour and Joe can paint it in 1/6th of an hour.

Answer 1

Thanks. What is your question?
How long does it take both to paint a wall?

sue can do 4walls/hour, and Joe can do 6walls/hour
Together they can do 10 walls/hour, so together, it takes them .1hr to do a single wall