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 x. The fixed cost of packaging x dolls is ₹2800. The marginal cost of producing 120 dolls:
A
₹72
B
₹720
C
₹2872
D
₹3520
Answer
₹720
Explanation
Solution
The correct option is (B):