Example 5:- A waxed paper (F) containing 25 wt. % wax and 75 wt. % paper pulp are continuously fed at a rate of 1000 Ib/hr to a certain extraction unit in which 98% of the wax input to the unit to the unit are extracted by 37 API kerosene (S). The extracted paper out from the extractor (R) contains 40 wt. % paper pulp, the reminder being kerosene and un-extracted wax. The product solution (P) consists of 80 % kerosene & 20 wt. % wax. Calculate:- al/ The flow rates of S, R and P. b// The composition of R. c// Gallons of kerosene input to the unit per hour.