Answer:
2.5hrs
Explanation:
We can start solving the problem by using the formula: distance = rate x time. If we call the time t in hours, we can write two equations:
49t = distance for the truck going south
62t = distance for the truck going north
We also know that the distance between the two trucks is the sum of the distances they have traveled, so:
distance = 49t + 62t = 111t
Now we can use the given information that the distance between the two trucks is 277.5 miles to find the value of t:
277.5 = 111t
t = 277.5 / 111
So the two trucks will be 277.5 miles apart after t = 2.5 hours.