Question

Fifty-five percent of the members of the junior varsity swim team wear glasses. Of the team members who do not wear glasses, 30 percent of them are in the 10th grade.

To the nearest whole percent, what is the probability that a randomly chosen member of the JV swim team does not wear glasses and is in the 10th grade?

14%
17%
55%
67%

Answer 1

55% wear glasses, so 45% do not. Of those, 30% are 10th graders: 0.45 × 0.30 = 0.135 = 13.5%, which rounds to 14%.

Answer: 14%