Olive walks at a rate of 4 miles per hour, and she lives 2 miles from the new station. Set the ratio:
4/1 = 2/x
Cross multiply
4x = 2
Isolate the x. Divide 4 to both sides
4x/4 = 2/4
x = 2/4 or 1/2
It will take her 1/2 hour to get to the new station.
hope this helps
