An ore (finely grounded) with 100kg/h flowrate containing 20% by mass water soluble solute is leached in a single ideal stage and sent in counter-current mode to two stage washing units. The underflow from each stage contains 0.5kg water /kg insoluble solid. If the water flowrate is 80kg/h; a) Draw a schematic diagram of the process labeling the underflow and overflow amounts and their contents. Calculate b) the amounts and concentrations of the streams at leaching and washing steps, c) the solute content of the final Extract, d) the percent recovery of the solute in the extract