Triathlete Dan runs along a 3-mile stretch of river and then swims back along the same route. If Dan runs at a rate of 10 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?	Choose the correct choice from the following.
A) 1/8
B) 2/15
C) 3/15
D) 1/4
E) 3/8
Dan travels 6 miles round trip.   Running part: (3/10*60 = 18 minutes)   Swimming Part: (3/6 *60 = 30 minutes)   6 miles in (18+30) minutes   6/48 = 1/8 mile per minute   1/8nswer: 1/8 mile per minute   1/8
<result>A</result>
Triathlete Dan runs along a 3-mile stretch of river and then swims back along the same route. If Dan runs at a rate of 10 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?