A musician kept track of the concert arenas on this year's tour and found that 80% of the arenas were sold out. Of those that were not sold out, 35% had been on the previous
tour schedule from last year, while 90% of those that were sold out were on the previous tour schedule. Which of the following represents the joint relative frequency of arenas
that were sold out and not on the previous tour schedule?
8%
13%
65%
72%