Problem #$2$: $(15)$

An evaporator system concentrates a liquor solution from $15\%$ to $50\%$ solids, handles $250kg$ of solids per hour. If the same system is going to concentrate a liquor from $10\%$ to $45\%,$ find the capacity of the system in terms of solids that can be handled per hour assuming water evaporating capacity to be the same in both cases.

Make a sketch, give a complete basis and give the degree of freedom analysis.