Answer:
It would take them two hours to finish.
Step-by-step explanation:
You can think of this in units of work per hour:
Romeo does 1w/3h
Randy does 1w/6h
so we simply need to add them together to find how much work per hour they can do:
[tex]\frac{1w}{3h} + \frac{1w}{6h} \\= \frac{2w}{6h} + \frac{1w}{6h} \\= \frac{3w}{6h}\\= \frac{1w}{2h}[/tex]
So collectively, they can do one job in two hours.
