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Question

Mathematics Question on Linear Equations in One Variable

A doll making small-scale unit calculates the variable cost of making x number of dolls per day as three times the square of xx. The fixed cost of packaging x dolls is 2800₹ 2800. The marginal cost of producing 120 dolls:

A

72₹ 72

B

720₹ 720

C

2872₹ 2872

D

3520₹ 3520

Answer

720₹ 720

Explanation

Solution

The correct option is (B):