Johnson Industries received a contract to develop and produce four high-intensity long-distance receiveritransmitters for cellular telephones. The first took 2,600 labor hours and $44,000 worth of purchased and manufactured parts, the second took 2,240 labor hours and $42,240 in parts; the third took 2,060 labor hours and $40,980 in parts; and the fourth took 1,882 labor hours and $39,710 in parts. Johnson was asked to bid on a follow-on contract for another dozen receiver/transmitter units. (Hint There are two leaming curvesone for labor and one for parts.) Use Exhibit 6.5. a. How many labor hours should Johnson estimate are needed for the additional 12 units? (Round your answer to the nearest whole number.) b. How much should Johnson estimate the pants cost will be for the additional 12 units? (Round your answer to the nearest dollor omourt.)