A car dealership sells used cars for $7,000 and new cars for $16,000. If a total of 17 cars were sold for $191,000, how many of the cars sold were used?
A raffle is being held between Jane, Jenna and June whose ratio of tickets is 4:2:6 respectively. If 15 tickets have Jenna's name on them, determine how many tickets there are in total?