how long will it take a train travelling at 68 kmph to pass an electric pole if the train is 170 m long
"sol . speed = [ 68 x 5 / 18 ] m / sec = 18.9 m / sec . time taken = ( 170 / 18.9 ) sec = 8.99 sec . answer c"
multiply(divide(divide(170, const_1000), 68), const_3600)