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A cocoa shipping firm has determined that its US demand curve is given by: Q= 6,

ID: 1093310 • Letter: A

Question

A cocoa shipping firm has determined that its US demand curve is given by: Q= 6,500- 2P Where Q is metric tons of cocoa and P is the price per metric ton. The firm can import cocoa from the Ivory Coast for $1,150 per metric ton. Its shipping cost it $74 per metric ton of cocoa. The company has fixed costs of $1,100. A. Write the inverse demand function and illustrate with a simple diagram. B. Write the revenue function. At what level of output (Q) is revenue maximized. C. Display the profit function. D. Indicate the level of profits (or losses) if Q= 0 E. Determine the optimal price and quantity for this firm. F. Suppose the US government imposed an import tariff of $1,500 per metric ton cocoa. Compute the effect of the tariff on the optimal price and quantity sold by this firm. Does the tariff affect profits? Explain.

Explanation / Answer

a)

Q = 6500 -2P

2P = 6500 -Q

P = 3250 - Q/2

b)

Revenue = Q * P

= Q * (3250) - Q^2/2

= 3250 Q -Q^2/2


for the max output

DR/Dq = 0

3250 - Q = 0

Q = 3250 ........output at which revenue is maximized


c)

cost function = 1150 * Q + 74 * Q +1100 = 1224 Q + 1100


Profit = Revenue - cost

profit = 3250Q - Q^2/2 - 1224Q -1100   

= 2026Q -Q^2/2 -1100


D)

If Q=0

loss = -1100


E)
for optimal price and quantity

DP/DQ = 0

2026 - Q = 0

optimal quantity = 2026

optimal price = 3250 - 2026/2 = 2237


F)

new profit function would be

profit = 2026Q -Q^2/2 -1100 - 1500Q = 526Q -Q^2/2 -1100


DP/DQ = 0

=> 526 - Q = 0

optimal quantity = 526

optimal price = 3250 - 526/2 = 2987

yes tariff decrease profit

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