Best Answer: We define speed as the amount of distance you travel in an amount of time: speed = (distance) / (time) Similarly we could say: time = (distance) / (speed) = (273 miles) / (52 miles/hour) = 5.25 hours So it takes 5 hours and one quarter of an hour, or 5 hours and 15 minutes. ( .25 hours * (60 minutes / 1 hour) = 15 minutes)