Answer:
the total contribution margin if Bricktan chooses the most profitable sales mix is $27,000,000 
Explanation:
It is important to note that the limiting factor identified is the production hours.
<em>Step 1 Calculate Contribution per limiting factor of each product</em>
Basic
1 unit requires 0.1 hours
Contribution per limiting factor = Contribution per unit / Quantity of limiting factor per unit
                                                     = $15/0.10
                                                     = $150
Classic
1 unit requires 0.125 hours
Contribution per limiting factor = Contribution per unit / Quantity of limiting factor per unit
                                                     = $25/0.125
                                                     = $200
Deluxe
1 unit requires 0.25 hours
Contribution per limiting factor = Contribution per unit / Quantity of limiting factor per unit
                                                     = $55/0.25
                                                     = $220
<em>Step 2 Rank the products </em>
1st = Deluxe
2nd = Classic
3rd = Basic
<em>Step 3 Determine the production mix</em>
Product                  Total hours demanded                Balance
Capacity                                                                       134,000
Deluxe                   (230,000×0.25) =  57,500             76,500
Classic                   (508,000×0.125) = 63,500             13,000
Basic                      (130,000×0.1)     =  13,000                  0
<em>Step 4 Calculate total contribution</em>
Deluxe                   (230,000×$55) =  12,650,000          
Classic                   (508,000×$25) =  12,700,000            
Basic                      (130,000×$15)   =  1,650,000
Total                                                 =  27,000,000