mass balance flow chart

plz show work for how equations are obtained.

Solve textbook problem 3.19(2sd ed) using the following flowchart notation. Conduct your calculation according to the following steps: (1) based on the "overall process" (grouping all three units), calculate the degree of freedom, do a total mass balance, and balance on "b"; (2) next, conduct total and "b" balances on the "mixer", and a total mass balance on the "splitter". In order to solve for the balances in (2), you may need to look for additional information in the problem statement. 10 points will be deducted if above instruction is not followed