On a 100-question math exam, traci needs to get at least 75 correct answers to pass. if traci id certain of her 50 answers, how many correct answers does she need to get in order to pass the exam?

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?