Johnny's is an Italian restaurant. Yesterday, they made $120$ pizzas in a $10-$hour shift. The process employs $2$ people at $\backslash$$$10/$hour$.$ and uses $20$ ounces of cheese on each pizza, Cheese costs $\backslash$$$0\mathrm{.}05/$oz$.$ Calculate a$)$ the labor productivity and b$)$ the multifactor productivity