a train 2500 m long can cross an electric pole in 50 sec and then find the speed of the train ?
"length = speed * time speed = l / t s = 2500 / 50 s = 50 m / sec speed = 50 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 180 kmph answer : b"
divide(divide(2500, const_1000), divide(50, const_3600))