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 75% learning curve and a $40 per hour labor charge, Suad wishes to calculate what thirteen additional planes should cost

Time required for the 11th unit =
Cost of the 11th unit =
Time required for the 12th unit=
Cost of the 12th unit =
Time required for teh 13th unit
Cost of the 13th unit =
Time required for teh 14th unit=
Cost of the 14th unit =
The combinded time for the four planes = hours
The combinded cost for the four planes = dollars