From the question, we are told that Chelsea plays soccer 4/12 of the year and swims 3/12 of the year before taking a break from playing sports.
The fraction of the year that Chelsea spend participating in sports will be the addition of the fraction used for playing soccer and the fraction use for swimming. This will be:
The theatre needs to sell 100 tickets in advance. or 80 tickets at the door to reach $400. They would need to sell 48 tickets at the door to reach their goal.
