# RATL 2 | Lesson 4 | Explore 2 Solution

a) Two painters were hired to paint a building. The first painter could do it himself in 7 hours and the second painter could do the job himself in 5 hours. If the two painters work together, how long will it take the two painters to do the job.

***The hint for this problem is that the first painter can paint $$\Large\frac{1}{7}$$ of the job per hour.  ***

$$\Large\frac{1}{7} + \frac{1}{5}=\frac{1}{t}$$