Please answer all four for thumbs up

Mason Corporation had $1,053,000 in invested assets, sales of $1,242,000, operating income amounting to $220,000, and a desired minimum return on investment of 14%. The profit margin for Mason Corporation is a. 17,7% b. 20.9% c. 14.008 a. 84.8% Residual Income The Commercial Division of Galena Company has operating income of $12,680,000 and assets of $74,500,000. The minimum acceptable return on assets is 12% What is the residual income for the division? Materials used by Jefferson Company in producing Division C's product are currently purchased from outside suppliers at a cost of \$10.00 per unit. However, the same materials are avallable from Division A. Division A has unused capacity and can produce the materials needed by Division C at a variable cost of $8.50 per unit. A transfer price of $9.50 per unit is negotiated and 25,000 units of material are transferred, with no reduction in Division A's current sales. Jefferson Company's total operating income will increase by 2100,000 b. 5150,000 c. 537,500 d. 562,500 Support Department Allocations The centralized computer technology department of Hardy Company has expenses of $364,500. The department has provided a total of 13,500 hours of service for the period. The Retail Division has used 3,780 hours of computer technology service during the period, and the Commercial Division has used 9,720 hours of computer technology service. How much should each division be allocated for computer technology department services? Do not round interim calculations