Question 605269
Biking at 12 mph, it takes Kristen 1/2 hour to reach the train station to go to work.
 Kristen then takes the train to work, and it takes another 1/2 hour for her to get to work when the train travels 24 mph.
 How far does Kristen travel to work?
:
Write a distance equation, dist = speed * time
:
Total dist = bike dist + train dist
d = 12(.5) + 24(.5)
d = 6 + 12
d = 18 mi