text: The fact that there are 13 of them and they weigh 500 lbs each is irrelevant to this problem. The answer is simply to use the equation:\n\nDistance = Speed * Time\n\nThus, if thhey are traveling at 37 mph for 15 miles, the time required is:\n\nTime = Distance / Speed\n\nT = 15 mi / 37 mph = (15/37) h * 60 min/hr\n\nT = 24.32 min.\n\nIf they stop for two minutes to eat, then carry on at the same speed, then two minutes is added to their required time (assuming that their eating time is independant from one anaother):\n\nT = 26.32 min\n\nGood luck! :)