Figure 1 shows a system for desalination of a saline solution using reverse osmosis (RO). The saline solution is loaded into tank A with a volume of 200L and a salt concentration of 35gL1. The pump circulates it through the membrane of the unit, and as a result two constant volumetric flows are obtained, one of the pure water of 24 L.h h 1 and the other of the more concentrated saline solution of 850 L. 1. Calculate the salt concentration in tank A, after 2.5 hours have elapsed