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algebra junior
Problem
Along the route of a bicycle race, water stations are evenly spaced between the start and finish lines, as shown in the figure below. There are also repair stations evenly spaced between the start and finish lines. The rd water station is located miles after the st repair station. How long is the race in miles? 
(A)
(B)
(C)
(D)
Solution
Suppose that the race is miles long. The water stations are located at miles from the start, and the repair stations are located at miles from the start. We are given that from which
Final answer
D