Posted by Daniel on Tuesday, December 7, 2010 at 2:29pm.
The two largest diner chains in Kansas compete for weekday breakfast consumers. The two chains, Golden Inn and Village Diner, each offer weekday breakfast customer a “breakfast club” membership that entitles customers to a breakfast buffet between 6:00 a.m. to 8:30 a.m. Club membership are sold as “passes” good for 20 weekday breakfast visits.
Golden Inn offers a modest but tasty buffet, while Village Diner provides a wider variety of breakfast items that are also said to be quite tasty. The demand functions for breakfast club memberships are:
QG = 5,000 – 25PG + 10PV
QV = 4,200 – 24PV + 15PG
Where QG and QV are the number of club memberships sold monthly, and PG and PV are the prices of club memberships, both respectively, at Golden Inn and Village Diner chains. Both diners experience long run costs of production, which are
LACG = LMCG = $ 50 per membership
LACV = LMCV = $ 75 per membership
The best response curves for Golden Inn and Village Diners are, respectively,
PG = BRG(PV) = 125 + 0.2PV
PV = BRV(PG) = 125 + 0.3125PG
a. If Village Diner charges $ 200 for its breakfast club membership, find the demand, inverse demand, and marginal revenue functions for Golden Inn. What is the profit maximizing price for Golden Inn given Village Diner charges
a price of $ 200? Verify mathematically that this price can be obtained from the appropriate best response curve given above.
I found Qg = 7000 -25 Pg. The inverse demand was Pg = 280 - .04 Qg, and the MR was 280 - .08 Qg. And solved for Q and I got 2,875 and for P I got 165. Am I on the right track?
b. Find the Nash equilibrium prices for the two diners. How many breakfast club memberships will each diner sell in Nash equilibrium? How much profit will each diner make?
c. How much profit would Golden Inn and Village Diner earn if they charged prices of $ 165 and $ 180 respectively? Compare these profits to the profits in Nash equilibrium (part c). why would you not expect the managers of Golden Inn and Village Diner to choose prices of $ 165 and $ 180 respectively?
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