a man sitting in a train which is traveling at 45 kmph observes that a goods train , traveling in opposite direction , takes 8 seconds to pass him . if the goods train is 340 m long , find its speed
"explanation : relative speed = 340 / 8 m / sec = ( ( 340 / 8 ) × ( 18 / 5 ) ) kmph = 153 kmph . speed of goods train = ( 153 - 45 ) kmph = 108 kmph answer : option c"
subtract(multiply(divide(340, 8), const_3_6), 45)