how do i do this chpt 25 homework problem

Calgary Lumber Company incurs a cost of $394 per hundred board feet (hbf) in processing certain "rough-cut" lumber, which it sells for $540 per hbf. An alternative is to produce a "finished-cut" at a total processing cost of $529 per hbf, which can be sold for $748 per hbt. a. Prepare a differential analysis dated March 15 on whether to sell rough-cut lumber (Alternative 1) or process further into finished-cut lumber (Alternative 2). Differential Analysis b. Determine whether to sell rough-cut lumber (Altemative 1) or process further into finished -cut lumber (Altemative 2)