36 . a 240 m long train crosses a platform of equal length in 27 s . what is the speed of the train in km / h ?
by the formula , speed = distance / time = ( 240 + 240 ) / 27 x ( 18 / 5 ) = 480 / 27 x 18 / 5 = 64 km / h answer : d
multiply(divide(multiply(const_2, 240), 27), divide(const_3600, const_1000))