A water contaminant is present in a pup solution with a concentration of 150 mg/L. 98% of the water entering the paper formation section is recovered as white water and sent to a clarifier. 5% of the water entering the clarifier is leaves with the sludge. For this contaminant, Ri=0.1 and Ei=0.05. What is the concentration is the effluent from the clarifier?

Hint: Draw a mass balance diagram using mass balance on water and the mass rate of the contaminant, noting that mass=concentration*flow.