Two marathoners begin their training run on the river bank at the same time. Sally Slow runs due south at 5 miles/hour, while Freddy Fast runs due North at 10 miles/hour. At this pace, how long before they have run 26.2 miles away from each other?  Choose the correct choice from the following choices.
A) 1.75 hours  B) 1.634 hours  C) 1.5 hours  D) 3 hours  E) 2.92 hours
The runners run a combined pace of 15 miles per hour (10+5).   26.2 miles/ 15 miles/hour= 1.75 hours   1.75 hoursnswer is 1.75 hours
<result>A</result>
Two marathoners begin their training run on the river bank at the same time. Sally Slow runs due south at 5 miles/hour, while Freddy Fast runs due North at 10 miles/hour. At this pace, how long before they have run 26.2 miles away from each other?