The distance is the same. So the two conditions (driving there and driving back) can be equated.
There
t = 3 hours
d = d
r = 54 mph
Back
t = ?
d = d
r = 60 mph
Basic Formula
d = r * t
Solution
54 * 3 = 60 * t Combine the left side
162 = 60 * t Divide by 60 on both sides
162 / 60 = t Combine
2.7 hours = time coming back.
0.7 hours = 60 * 0.7 = 42 which is in minutes.
2 hours and 42 minutes. Answer
