how long will it take a train travelling at 98 kmph to pass an electric pole if the train is 140 m long
"sol . speed = [ 98 x 5 / 18 ] m / sec = 27.2 m / sec . time taken = ( 140 / 27.2 ) sec = 5.15 sec . answer b"
multiply(divide(divide(140, const_1000), 98), const_3600)