$x_{A1}be$ the number $of$ units $of$ product A produced $by$ machine $1,x_{ij}be$ the number $of$ units $of$ product i produced $by$ machine $j,$

etc.$x_{ij}0$ for all $i,j$

$(b)$ Solve the transportation model for the minimum cost production schedule for the products and machines.

Show the production schedule.

Determine the cost $(in$ dollars$)of$ the production schedule.

Total $=$ $