question below

Colt Company produces two skateboard models. Machine time per unit for Hero is two hours and for Flip is one hour. The machine's capacity is 1,900 hours per year. Colt can sell up to 680 units of Hero and 840 units of Flip per year. Selling prices and variable costs follow. Selting price per unit Variable costs per unit Hero $156 52 Flip \$ 98 56 (a) Compute the contribution margin per machine hour for each product. (b) Determine the best sales mix of products