Answer:
marginal cost = $2
Explanation:
given data:
cost on wool when 10 sweater made in one month = $15
cost on wool when 11 sweater made in one month = $17
fixed cost = $100
In case of no other cost present, marginal cost is given by
Marginal cost = cost of eleven sweaters - cost of ten sweaters
= $17 -$15
= $2