g A reactor has an overall hydraulic residence time t , based on the total volume of water in the reactor and the total flow through it. The reactor can be reasonably represented as two ideal CMFR reactorsin parallel. 60% of influent flow passes through the first CMFR with residence time of t1. 40% of influent flow passes through the second CMFR with residence time of t2. (a) Write the overall E(t) equation for the two CMFRs in parallel (Hint: in a parallel system, the events occurring in each unit add up proportionately to yield the overall function). (3 points) (b) What fraction of the water that enters the reactor stays there for a time t < t. Assume t