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For a particular flight from Dulles to SF, an airline uses wide-body jets with a capacity of 440 passengers. It costs the airline $4,000 plus $70 per passenger to operate each flight. Through experience the airline has discovered that if a ticket price is $T, then they can expect (440−0.64T) passengers to book the flight. Determine the ticket price, T, that will maximize the airline's profit.

Respuesta :

Answer:

$378.75

Explanation:

Data provided:

Capacity = 440 passengers

Operating cost = $4,000 + $70(Number of passengers)

Expected number of passengers = 440 - 0.64T

Ticket price = T

Total operational cost = $4000 + $70( 440-0.64T )

Total operational cost = $34,800 - 44.8T

Thus,

Total revenue = Number of passengers × Ticket price

= (440 - 0.64T)T

= 440T - 0.64T²

also,

Total profit ,P(T) = Total revenue - Total operational cost

P(T) = ( 440T - 0.64T²) - (34,800 - 44.8T)

P(T) = - 0.64T² - 34,800 + 484.8T

Now,

Differentiating with respect to ticket price T

P'(T) = -0.64(2)T - 0 + 484.8(1)

or

P'(T) = - 1.28T + 484.8 ..............(1)

For point of maxima or minima

P'(T) = 0

or

 - 1.28T + 484.8 = 0

or

1.28T = 484.8

or

T = $378.75

now,

again differentiating (1) to check for maxima or minima

P''(T)= -1.26(1) + 0

P''(T) = -1.26

Since,

P"(T)  < 0

Hence,

T = $378.75 will maximise the profit

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