Question 18
A ski resort has three pricing options: 60 dollars for just a lift ticket, 20 dollars for just a ski lesson, or 70 dollars when both are bought together. On Sunday, 50 people bought exactly one of the three options. If 42 lift tickets and 23 lessons were sold, what was the mean or average purchase amount in dollars for these 50 people? (Round your answer to a nearest whole number)