<p><a href="https://www.prepswift.com/quizzes/quiz/prepswift-working-with-your-bros" target="_blank">Working with your Bros Exercise</a></p><p>If you're <span style="color:#27ae60;">Working with Your Bros</span>, what do you do to each person's rate? Well, if you're working together, you ADD the rates.</p>
<p><strong><span style="color:#8e44ad;">Example</span></strong></p>
<p>Let's say Frank can paint a fence in $3$ hours and Bill can paint a fence in $5$ hours. How long does it take for them to paint a fence together?</p>
<p>Well, Frank can paint $\frac{1}{3}$ of a fence in one hour and Bill can paint $\frac{1}{5}$ of a fence in one hour. So let's add those together:</p>
<p>$$\frac{1}{3} + \frac{1}{5} = \frac{5}{15} + \frac{3}{15} = \frac{8}{15}$$</p>
<p>We then use this as the rate to solve the problem:</p>
<p>$$1 \ fence = \frac{8}{15} \times time$$</p>
<p>$$time = \frac{15}{8} = 1.875 \ hours$$</p>