<p>Calvin traveled from his home to another city at an average speed of 32 miles per hour, and then returned home along the same route at an average speed of 40 miles per hour.If his total traveling time for the trip was 3 hours, how many minutes did it take Calvin to drive from his home to the other city? hanks</p>

<p>I tried using the formula 2 * rate1 * rate2 / rate 1 + rate 2</p>

<p>But couldnt get the answer (assuming i did it wrong) .</p>

<p>Can anyone explain me how to solve the problem using that way?</p>

<p>Thanks</p>