In June, Robust Engineering worked on three contracts: 1,200 hours for Tico Company, 1,100 hours for Navel LLC and 3,400 for Lutron Corp. Robust bills clients at the rate of $150 per hour. Labor cost for its engineering staff is $45 per hour. The total number of hours worked in June was 6,000 (any u $325,000. Overhead is applied to clients at $55 per labor-hour. In addition, Robust had $243,000 in marketing and administrative costs. All transactions are on account. All services were billed. 5. ntraced hours are considered overhead), and non-labor overhead costs were Required: a. Determine the cost of each of the three jobs. b. What is the amount of over- or underapplied overhead? c. How much operating profit did Robust make in June? Assume the over-or underapplied overhead is not closed out each month