Sarasota Bicycles has been manufacturing its own wheels for its bikes. The company is currently operating at 100% capacity, and variable manufacturing overhead is charged to production at the rate of 30% of direct labor cost. The direct materials and direct labor cost per unit to make the wheels are $3.00 and $3.60 respectively. Normal production is 200,000 wheels per year. A supplier offers to make the wheels at a price of $8 each. If the bicycle company accepts this offer, all variable manufacturing costs will be eliminated, but the $84,000 of fixed manufacturing overhead currently being charged to the wheels will have to be absorbed by other products. Required: a. (5 points) Should Sarasota Bicycles buy the wheels from the outside supplier? Justify your answer; show your calculations. b. (2 points) How much additional contribution margin would the other products have to generate to make the the supplier's offer acceptable.