Answer:
44.44 mph
Step-by-step explanation:
Since we are given 50 from the start, and 40 at the end, we will add 50 and 40.
50 + 40 = 90
Then, Divide the result by 2.
90 ÷ 2 = 45
Here is the tricky part: we are not done!
Don't be mistaken by the question. Some people may think the answer is 45mph because that is what it is rounded up, however, the question did not ask for the answer rounded up.
This is a round trip, so reduce this to the nearest value in both tenths and units. Hence, it would be 44.44.