Answer:
O $10
Explanation:
Marginal cost refers to the extra expense incurred by purchasing, selling, or producing one more unit of a product. Calculating the marginal cost will require isolating the cost of the extra unit from the other expenses.
For Christopher, the cost associated with the first pair is $20. the cost rises to 30 with the purchase of a second pair. The extra cost incurred due to the purchase of a second pair is $30 mins $20
=$30-$20
=$10
The additional expense incurred by purchasing, selling, or creating one more unit of a product is referred to as marginal cost. Christopher's marginal cost of the shoes cost $10.
The first pair of shoes will set you back $20 for Christopher.
With the purchase of a second pair, the price jumps to $30.
The additional cost of purchasing a second pair is $30 minus $20
[tex]\text{One pair of Shoes} = $30 \text{ dollars}\\\text{Christopher's paying ability} = $20 \text{ dollars}\\\text{Marginal cost} = 30 - 20\\\text{Marginal cost} = 10 \text{ dollars}[/tex]
Therefore, option (a) or (i) is the correct answer.
For more information about marginal cost, refer below
https://brainly.com/question/13267735
