Hi, could someone please give me explanation and steps to do these questions? Thank you very much!

45) Pitts Company makes a variety of paper products. One product is 20 1b. copier paper, packaged 5,000 sheets to a box. One box normally sells for $18. A large bank offered to purchase 3,000 boxes at $14 per box. Costs per box are as follows: Direct materials $8 Direct labour Variable overhead Fixed overhead No variable marketing costs would be incurred on the order. The company is operating significantly below the maximum productive capacity. No fixed costs are avoidable. Should Pitts accept the order? Yes, income will increase by $6,000. Yes, income will increase by $9,000. No, income will decrease by $3,000 No, income will decrease by $6,00047) Stars Manufacturing Company produces Products Al, B2 and C3 through a joint process. The joint costs amount to $200,000. If Processed Further Units Sales Value Additional Sales Product Produced at Split-Off Costs Value A1 3,000 $14,000 $2,500 $15,000 B2 5,000 30,000 3,000 35,000 C3 4,000 20,000 4,000 25,000 If Product B2 is processed further, profits will a ) increase by $30,000 b ) decrease by $3,000 c) increase by $32,000 d) increase by $2,000 48) Using the information from Question 47. If Product Al is processed further, profits will increase by $37,500 decrease by $1,500 decrease by $37,500 increase by $1,50050) The unit product cost consists of direct materials cost $10; direct labour eost $20 and applied overhead cost. The applied overhead rate is 50% of direct labour cost. What is the unit selling price if the company's mark-up policy is 20%? a) $60 1)} $40 e) $68 d} 343