During 2013, Arb Company incurred the following direct labor costs: January $20,000 and February $30,000. Arb uses a predetermined overhead rate of 120% of direct labor cost. Estimated overhead for the 2 months, respectively, totaled $19,500 and $35,700. Actual overhead for the 2 months, respectively, totaled $24,500 and $32,500. Determine if overhead is over- or underapplied for each of the two months and the respective amounts.

Aproduction line has three machines a, b, and c, with reliabilities of .96, .86, and .85, respectively. the machines are arranged so that if one breaks down, the others must shut down. engineers are weighing two alternative designs for increasing the line’s reliability. plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each machine. in either case, three machines (a, b, and c) would be used with reliabilities equal to the original three. a. compute overall system reliability under plan 1. (round your intermediate calculations and final answer to 4 decimal places.) reliability b. compute overall system reliability under plan 2. (round your intermediate calculations and final answer to 4 decimal places.) reliability c. which plan will provide the higher reliability? plan2plan1