Question

A math class has
3
girls and
3
boys in the seventh grade and
5
girls and
3
boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys?

Answer 1

The probability of selecting a boy from the seventh grade is 3/6.
The probability of selecting a boy from the eighth grade is 3/8.
The probability the the selected students are both boys is:
$\frac{3}{6}\times\frac{3}{8}=\frac{3}{16}$
The answer is: 3/16 or as a decimal fraction 0.1875.