Question

an Express train travel at an average speed of 100 km per hour, stopping for 3 minutes after every 75 km . how long didi it take ot reach its destination 600 km from the starting point.

Answer 1

384 minutes or 6 hrs 24 minutes

Answer 2

the train stops after every 75km and the train stops for 7 times equal to 21minutes. now the speed of train is 100km/hr means it will cover a distance of 100km in 1 hr ,acoordingly it will cover 600km in 6hrs means 360minutes
So answer is 360+21 minutes equal to 381 minutes