Question 12
On a long straight stretch of one-way single-lane highway, cars all travel at the same speed and all obey the safety rule: the distance from the back of the car ahead to the front of the car behind is exactly one car length for each $15$ kilometers per hour of speed or fraction thereof. (Thus the front of a car traveling $52$ kilometers per hour will be four car lengths behind the back of the car in front of it.)
A photoelectric eye by the side of the road counts the number of cars that pass in one hour. Assuming that each car is $4$ meters long and that the cars can travel at any speed, let $M$ be the maximum whole number of cars that can pass the photoelectric eye in one hour. Find the quotient when $M$ is divided by $10.$
A photoelectric eye by the side of the road counts the number of cars that pass in one hour. Assuming that each car is $4$ meters long and that the cars can travel at any speed, let $M$ be the maximum whole number of cars that can pass the photoelectric eye in one hour. Find the quotient when $M$ is divided by $10.$