The question is incomplete:
The total distance of a race is 18.9 km.
If volunteers set up a water station every 0.7 km, including one at the finish line, how many stations will they have?
Answer:
They will have 27 stations.
Explanation:
In order to find the answer with the information provided, you have to divide the total distance of the race by 0.7 that is the distance at which the volunteers will set up the water stations:
18.9/0.7= 27
According to this, the answer is that they will have 27 stations.