Question

Water stations will be placed every 400 meters of a 5 - kilometer race. How many water stations are needed? (hint 1 kilo=1,000 meters)

Answer 1

1 kilo=1000 meters. 
The race is 5,000 meters total.
5000 divided by 1 station every 400 miles.
5000/400=12.5
12.5 water stations!
I dont know if you're supposed to round but there you go!