Answer:
1/5
Step-by-step explanation:
We need to fill in the circles; on the left, we need to put the number of students who play an instrument. That information is given: it's 25.
In the middle, we need the number of students who both play an instrument and speak a foreign language: again, we know that's 16.
On the right, we need the number of students who speak a foreign language; that's 30.
Finally, there are 9 students who participate in neither of these activities, so place "9" outside the circles but still in the rectangle.
See the attachment.
Probability is basically (# times specific event can occur) / (# times general event will occur). Here, the specific event is getting a student who plays an instrument and speaks a foreign language, which is 16. The general event is just selecting a student; since there are 80 total students, that number would be 80.
Our probability is thus:
16 / 80 = 1/5
