In: Economics
Executives of a bread company decide to add a new line of whole wheat bread. Research indicates that consumers will buy about 700 loaves at $1.95 a loaf and 1,100 at $1.60 a loaf. The company can supply 450 loaves at $1.65 per loaf and 1,250 loaves at $1.92 per loaf. Furthermore, the baking staff reports that it costs $270 for 850 loaves and $555 for 2,200 loaves. Let the input be p, price per loaf, and the output be q, number of loaves.
(a) What is the demand equation,
D(p)?
(Round all numerical values to two decimal places.)
(b) What is the supply equation,
S(p)?
(Round all numerical values to two decimal places.)
(c) Find the market equilibrium price and quantity. (Round your answers to two decimal places.)
(d) What is the cost equation,
C(q)?
(Round all numerical values to two decimal places.)
(e) What is the cost equation,
C(p)?
(Round all numerical values to two decimal places.)
(f) What is the revenue equation,
R(p)?
(Round all numerical values to two decimal places.)
(g) What is the profit equation
P(p)?
(Round all numerical values to two decimal places.)
(h) Find the break-even price(s) only, not the quantities. (Enter your answers as a comma-separated list. Round your answers to two decimal places.)
We will use equation of a line for estimating all the equations,
P - P1 = [(P2 - P1)/(Q2 - Q1)] * (Q - Q1)
a) Here, P1 = $1.95 , Q1 = 700 loaves, P2 = $1.60 and Q2 = 1100 loaves
Substituting these values in the equation of the line, we get,
P = -0.000875Q + 2.5625
=> D(P) = -1142.85P + 2928.57
This is the demand fuction, D(P)
b) Here, P1 = $1.65, Q1 = 450 loaves, P2 = $1.92 and Q2 = 1250 loaves
P = -0.0003375Q + 1.80
=> S(P) = -2963P + 5338.9
Thus, the supply function is S(P)
c) At Equilibrium, D(P) = S(P)
=> -1142.85P + 2928.57 = -2963P + 5338.9
=> P = $2.04 and D(P) = S(P) = Q = 597 units
d) Here, P1 = C1 = $270 , Q1 = 850 loaves, P2 = C2 = $555 and Q2 = 2200 loaves
C(Q) = 0.21Q + 448.5, this is the cost function.
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