A hot dog vendor faces a daily demand curve of Q = 1800 – 15P, where P is the price of hot dogs in cents and Q is the number of hot dogs purchased each day. a. If the vendor has been selling 300 hot dogs each day, how much revenue has he been collecting? b. What is the price elasticity for hot dogs? c. The vendor decides that he wants to generate more revenue. Should he raise or lower the price of his hot dogs?
Answer
a)
Q=1800-15P
Q=300
300=1800-15P
15P=1500
P=100
total revenue =P*Q=300*100=30000
the total revenue is $30000
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b)
price elasticity =(dQ/dP)*Q
dQ/dP=-15 .......... first differentiation of the demand curve
price elastcity=(-15)*(100/300)
=-5
The price elasticity is -5. The demand is elastic as the elasticity is below -1.
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c)
A revenue is maximum when demand is unit elastic, and the given demand is elastic so the vendor should decrease the price to increase revenue.
the price should be
price elasticity of demand =(dQ/dP)*(P/Q)
-1=(-15)*(P/(1800-15P))
1800-15P=15P
30P=1800
P=60
Q=1800-15*60=900
TR=P*Q=60*900=54000
A hot dog vendor faces a daily demand curve of Q = 1800 – 15P, where...
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small city. Suppose that this market is in long-run competitive
equilibrium with many hot dog stands in the city, each one selling
the same kind of hot dogs. Therefore, each vendor is a price taker
and possesses no market power. The following graph shows the demand (D) and supply curves (S = MC) in the market for hot dogs. Place the black point (plus symbol) on the graph to indicate the market price...
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