With the price increase in tutoring from $5 to $15, producer surplus increases by $10.
Producer surplus is the additional benefit that the tutors receive. It can be computed by determining the difference between old tutoring price, $5, and the new market price of $15. The implication is that while tutors are willing to accept $5, the new marketing price has made it possible for them to increase their surplus by $10 ($15 - $5).
Thus, the producer surplus increases by $10 to show the increased benefit that suppliers receive for selling their services in the marketplace.
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