As an Aerial Porter in the USAF one of my jobs is to load and transfer pallets with cargo from one point to another. If I have one load of pallets that weighs 10,000 lbs and it takes me 2 hours to transfer these to a C-17 with a required 15 min rest every 3 hours how long would it take me to transfer 60,000 lbs?

Let's break this problem down a little. First, we will consider the "transfer time." So we multiply 2 hours by 6 (since we will have six loads). This is 12 hours. Now, let's multiply 15 minutes (or a quarter of an hour) by the number of times that 3 hours elapses. In 12 hours, 3 hours elapses 4 times. 4 times 15 minutes is an hour. Therefore, we add an additional hour to 12 which gives us 13 hours. Does this suffice or do you want this presented algebraically?

I hope this helps.

-Andy