4. Referring to the following, there are three inlets designed to drain the water from three tributary areas, whose Q's are 3, 5, 4cfs respectively. All water bypassing inlets 1 and 2 would be intercepted by inlet 3. Estimating the rate of flow (cfs) to inlet 3. Q1-3cf Q2-3cfs Q3-4cfs Inlet 1, on grade, Inlet 2, on grade, Inlet 3, on sag. interception=60% interception=80% interception=100%