R campers fished for 7 hours. If m of the campers caught 2 fish apiece and the rest caught a combined total of n fish, how many fish did the R campers catch per hour?	Choose the correct choice from the following.
A) 2m + n(R-m)  B) (2m + n(R-m))/3  C) (2m + n(m-R))/3  D) (2m + n)/7  E) (2m + n)/R
m of the campers caught 2 fish apiece in 7 hours --&gt; total fish caught by m campers = 2m;   The rest caught a combined total of n fish.   Total fish caught in 7 hours = 2m+n --&gt; per hour (2m+n)/7.   Answer: (2m + n)/7.
<result>D</result>
R campers fished for 7 hours. If m of the campers caught 2 fish apiece and the rest caught a combined total of n fish, how many fish did the R campers catch per hour?