Triathlete Dan runs along a 2-mile stretch of river and then swims back along the same route. If Dan runs at a rate of 8 miles per hour and swims at a rate of 6 miles per hour, what is his average rate for the entire trip in miles per minute?
Select the correct option.
A) 1/9  B) 2/15  C) 3/15  D) 1/4  E) 3/8
Dan travels 4 miles round trip.   Running part: (2/8 = 1/4*60= 
<gadget id="calculator">1/4*60</gadget>
<output>15</output>
15 minutes)   Swimming Part: (2/6= 1/3*60= 
<gadget id="calculator">1/3*60</gadget>
<output>20</output>
20 minutes)   4 miles in (15+20) minutes   4/35= 1/9 mile per minute   1/9nswer: 1/9 mile per minute
<result>A</result>
Triathlete Dan runs along a 2-mile stretch of river and then swims back along the same route. If Dan runs at a rate of 8 miles per hour and swims at a rate of 6 miles per hour, what is his average rate for the entire trip in miles per minute?