A body is given an initial velocity of 40 m s-1 at a point, P. The body decelerates uniformly and attains a velocity of 20 ms at a point, X. The body is finally brought to rest at a point, M. If the time taken by the body through the whole journey is 20 s and the distance covered from P to X is 200 m, Calculate the: (i) (ii) deceleration of the body; distance between X and M; time taken by the body to move from X to M.