Answer:
it costs him $10 to make an additional ornament each month.
Step-by-step explanation:
Marginal cost (MC) of production measures the cost of producing one extra unit of a good (Hall, 2019). If Nicholas produces one additional ornament, his marginal cost of production will be calculated as follows:
MC = change in cost / change in quantity
= ($5 for materials + $5 for labour per half hour) / 301 – 300 units
= $10 / 1
= $10
or MC = ($10 for material + $10 for labour for a full hour) / 302 units - 300
= $20 / 2
= $10
It costs $10 extra to make an additional ornament in half an hour or 2 in a full hour. The fixed cost of $300 for rent, he has to pay regardless of the amount he produces. MC curve tends to fall first and then rises after diminishing marginal returns occur.