$2/$ Puyallup Corporation makes two products in a joint manufacturing process. At the point

of separation, costs of $$56,000$ have been incurred. Each product can be sold at the

separation point or processed further. The following information is available for these

products:

a$.$ What is the net increase $($decrease$)$ in operating income from processing Product

MJ$1$ further?

b$.$ What is the net increase $($decrease$)$ in operating income from processing Product

MJ$2$ further?

c$.$ Which product should be processed further. Explain your answer.