Water flows in laminar flow along a horizontal channel which has a width of 4 m. It is observed that the depth of water in the channel is 3 cm and that small gas bubbles which form at the floor of the channel, take 220 seconds to reach the surface after detachment. It is also observed that the bubbles reach the water surface 7.32 m measures in the direction of flow from the point of formation. Determine the rate of flow of water along the channel.