lOMoARcPSD|60380256
The marginal cost (MC) is 126$ for per unit
let’s assume a linear demand curve: ( P = a - bQ ), where ( P ) is the price, ( Q ) is the
quantity, and ( a ) and ( b ) are constants ( hng s ). We have formula:
Marginal revenue ( doanh thu biên ) = d(TR)/d(Q) -> d(aQ bQ^2) -> đạo hàm this we have :
a 2bQ ( Q is unknown number ) Total revenue ( TR ) = P*Q = (a bQ)Q = aQ bQ^2
a and b are randomly so I will assign a value of 200 to a and 0,5 to b so we got
1. Marginal revenue = a 2bQ = 200 2*0,5*Q = 200 Q 2. Marginal
revenue = marginal cost
200-Q = 126 -> Q = 74 -> so the quantity is 74 units
3. Price ( P ) = a bQ = 200 0,5*74 = 163$
To maximize amazon’s profit, they should manufacture and sell with 163$ per unit.

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lOMoARcPSD| 60380256
The marginal cost (MC) is 126$ for per unit
let’s assume a linear demand curve: ( P = a - bQ ), where ( P ) is the price, ( Q ) is the
quantity, and ( a ) and ( b ) are constants ( hằng số ). We have formula:
Marginal revenue ( doanh thu biên ) = d(TR)/d(Q) -> d(aQ – bQ^2) -> đạo hàm this we have :
a – 2bQ ( Q is unknown number ) Total revenue ( TR ) = P*Q = (a – bQ)Q = aQ – bQ^2
a and b are randomly so I will assign a value of 200 to a and 0,5 to b so we got
1. Marginal revenue = a – 2bQ = 200 – 2*0,5*Q = 200 – Q 2. Marginal revenue = marginal cost
200-Q = 126 -> Q = 74 -> so the quantity is 74 units
3. Price ( P ) = a – bQ = 200 – 0,5*74 = 163$
To maximize amazon’s profit, they should manufacture and sell with 163$ per unit.