The first $2$ problems are from chapter $1$ and the other $2$ problems are from chapter $2.$

A manufacturing firm has received a contract to assemble $1000$ units of test equipment in the next year. The firm must decide how to organize its assembly operation.

a$)$ Skilled workers, at $$33$ per hour each, can individually assemble the test equipment in $2\mathrm{.}6$ hours per unit.

b$)$ Teams of $4$ less skilled workers, at $$19$ per hour each, can assemble a unit in one hour.