a. An engineer can do required computations in 3 hours or she can delegate the work to an engineering aide. If the work is delegated, it will take 0.75 hour to explain the computational procedure and 0.50 hour to check the results. The actual calculations will take 4 hours to do if done by the aide. If the engineer receives a salary of $34,000 per year and the aide $17,200 per year, what are the comparative costs for each of the methods for a working year of 2080 hours