Motorcross of Wisconsin produces two models of snowmobiles, the XJ6 and the XJ8. In any given production-planning week Motorcross has 40 hours available in its final testing bay. Each XJ6 requires 1 hour to test and each XJ8 takes 2 hours. The revenue (in $1,000s) for the firm is nonlinear and is stated as

(Number of XJ6s) (4 – 0.1 number of XJ6s) + (Number of XJ8s) (5 – 0.2 number of XJ8s).

(a) Formulate this problem.

(b) Solve using Excel.