A student uses a stopwatch to measure the time for a car to make 5 laps of the track in a car race around a track. The student forgets to reset the stopwatch at the start of the race. The figure below shows the time on the stopwatch at the start and the time after going around the track 5 times at a constant rate.
Calculate, in seconds, the time it takes the car to go around the track once.
. (Option A)
