a$.$ How much of the resource in constraint $3$ is "optimally" used?

b$.$ Let the decision variables in the above problem be $C1$ and $C2$ representing the

number of clock $1$ and clock $2$ produced. Now the production manager requires

that the production quantity of clock $1$ to be at most $4$ times the production

quantity of clock $2.$ Represent this restriction.

c$.$ What are the constraints?

d$.$ A new constraint is being considered to be added: $C10\mathrm{.}2(C1+C2).$ What is the

standard form of this constraint?