a train of length 250 m crosses a bridge of length 150 m in 32 seconds . what is the speed of train ?
"sol : ( length of train + length of bridge ) = speed of train x time ( 250 + 150 ) = 32 x speed speed = 400 / 32 = 12.5 m / s = 45 km / h answer = e"
multiply(const_3_6, divide(add(250, 150), 32))