The entry fee that the club should charge each player under an optimal two-part tariff is $ 4.5.
According to the question,
P = 20- Q
⇒ 11 = 20 - Q
⇒ Q = 9
CSₐ = (20 -11) (9 -0) / 2
= 9 × 9 /2
= 40.5
Cs = CSₐ / 9
= 40.5 /9
= 4.5
The entry fee that the club should charge each player under an optimal two-part tariff is $ 4.5.
The correct answer would be $ 4.5.
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