The original speed is given in miles per hour (like a car), but the answer is asking for miles per minute, so we must convert the speed into miles per minute first. To do this, we set up this equation: which equals . We can then divide the desired number of miles by the speed in miles per minute. Here is the eqaution for this . The miles cancel and you are just left with 29.1 minutes after you divide 4.9 by 0.168333333. Hope this helps!