How long does it take for a family to go on holiday train with a total length of 250 meters and a speed of 60 kilometers per hour to cross a 500 meter road kkkkkkkk

How long does it take for a family to go on holiday train with a total length of 250 meters and a speed of 60 kilometers per hour to cross a 500 meter road kkkkkkkk

The distance to take is 250 + 500 (from the front to the rear)
60 kilometers per hour, 1000 meters per minute
So 750 / 1000 * 60 = 450 seconds