Morris Inc To Satisfy the Tackle Contract,another Part-Time Trainer Will Need to Training

Morris Inc.is a management consulting firm that specializes in management training programs.Tackle Manufacturing Inc.has approached Morris to contract for management training for a one-year period.Last year's income statement for Morris is as follows:
$$\begin{array} { | l | r | r | } \hline \text { Sales Revenue } & & \$ 360,000 \\\hline \text { Costs: } & & \\\hline \text { Labor } & \$ 120,000 & \\\hline \text { Equipment Lease } & 12,000 & \\\hline \text { Rent } & 24,000 & \\\hline \text { Utilities } & 8,400 & \\\hline \text { Supplies } & 23,600 & \\\hline \text { Other Costs } & 14,400 & \\\hline \text { Manager's Salary } & \underline{80,000 }& \\\hline \text { Total Costs } & & 282,400 \\\hline \text { Operating Profit (Loss) } & &\underline{ \$ 77,600} \\\hline\end{array}$$
To satisfy the Tackle contract,another part-time trainer will need to be hired at $42,000.Supplies will increase by 12% and other costs will increase by 15%.In addition,new equipment will need to be leased at a cost of $2,500.
a.What are the differential costs that would be incurred if the Tackle contract is signed?
b.If Tackle will pay $55,000 for one year,should Morris accept the contract? Explain your answer.