Answer:
D (13.1÷111/120)
Explanation:
If every 111/120 miles is a station, and total miles long is 13.1, the procedure to calculate the total number of stations is:
111/120 = 0.925; which means that there's a station every 0.925 miles. This number must divide the total 13.1 miles, to know how many stations there are.
13.1/0.925=14.16.
Therefore, there are 14 water stations.