Question

In: Economics

The magic car company can sell a new car for P(x) = 1500 - 3x... Fixed...

The magic car company can sell a new car for

P(x) = 1500 - 3x... Fixed overhead = $60,000..... cost per car = $200.

a) Write down the formulas for R(x) and C(x). the revenue and cost functions, in terms of x, the number of cars produced and sold.

b) Let P(x) = R(x) - C(x) be the profit function. Sketch the graph of P(x) indicating the appropriate domain.

c) How many cars do you need to break even?

d) What is the maximum possible profit?

Solutions

Expert Solution

(a)

R(x) = x.P(x) = 1,500x - 3x2

C(x) = Fixed cost + Variable cost = 60,000 + 200x

(b)

P(x) = R(x) - C(x) = (1,500x - 3x2) - (60,000 + 200x) = 1,300x - 3x2 - 60,000

When x = 0, P(x) = 0 (Vertical intercept of profit function curve).

Data table used:

x P(x)
0 -60000
10 -47300
20 -35200
30 -23700
40 -12800
50 -2500
60 7200
70 16300
80 24800
90 32700
100 40000

Graph:

(c) In break-even, P(x) = 0.

1,300x - 3x2 - 60,000 = 0

3x2 - 1,300x + 60,000 = 0

Solving this quadratic equation using online solver,

x = 381 or x = 53 (considering integer values for quantity)

(d) Profit is maximized when dP(x)/dx = 0

1,300 - 6x = 0

6x = 1,300

x = 22 (considering integer values for quantity)

Profit = (1,300 x 22) - (3 x 22 x 22) - 60,000 = 28,600 - 1,452 - 60,000 = -32,852 (Loss)


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