You go to a team dinner with your aunt and uncle. the cost of a student meal is $5.50. meals for adults cost $12.50 each. how much does it cost for the three of you to go to the dinner?

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?