Suad Alwan, the purchasing agent for Dubai Airlines, has found that the third plane it needed from a Brazilian manufacturer took that firm 20,000 hours to produce. Using an 85% learning curve and a $40-per-hour labor charge Suad wishes to calculate what twelve additional planes should cost. Time required for the twelfth unit = hours (round your response to the nearest whole number). Cost of the twelfth unit = dollars (round your response toriche nearest whole number). Time required for the thirteenth unit = hours (round your response to the nearest whole number). Cost of the thirteenth unit = dollars (round your response to the nearest whole number). Time required for the fourteenth unit = hours (round your response to the nearest whole number)