Answer: Brian sold 35 tickets.
Step-by-step explanation: Given that Brian had 42 class fair tickets to sell and he sold \(\dfrac{5}{6}\) of the tickets.
We are to find the number of tickets that Brian sold.
We have
Total number of tickets that Brian had = 42.
Since he sold five-sixth of the total tickets that he had, so the number of tickets that Brian sold is given by
\(N_s=\dfrac{5}{6}\times \textup{total number of tickets}=\dfrac{5}{6}\times42=5\times7=35.\)
Thus, Brian sold 35 tickets.
