Answer:
by less than $15 ; increase to $75
Explanation:
As per the question,
We have been provided a monopoly served the market in which
The marginal cost = $60
And
The price = $110.
If the marginal cost increased from $60 to $75,
∴ The monopoly would raise its price = $75 - $60
= $15
And the price in the perfectly competitive market must be greater than $75.
Therefore,
In a perfectly competitive market, the marginal cost is $60. If the marginal cost increased from $60 to $75, the monopoly would raise its price by less than $15, and the price in the perfectly competitive market would increase to $75.