Water flows through a pipe AB 1.2 m diameter at 3 m/s and then passes through a pipe BC 1.5 mdiameter. At C, the pipe branches. Branch CD is 0.8 m in diameter and carries one third of the flow in AB. The flow velocity in branch CE is 2.5m/s. find the volume rate of flow in AB, the velocity in BC, the velocity in CD and the diameter of CE.