The junior class has 50 students. Twenty-five students take only French, 15 take only Latin, and 10 take both. If a student is chosen at random from the class, what is the probability that the student chosen takes either French only or Latin only? 1/2 4/5 1
The answer is 4/5 because the combined probability (French only is .5, and Latin only is .3) for French only and Latin only is .8, which is equal to 4/5.