Write your answer as a fraction in simplest form.

Question

A science class has 2

 girls and 2

 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?Write your answer as a fraction in simplest form.

Answer 1

Abood,

7th grade: 2 girls and 2 boys

8th grade: 5 girls and 3 boys

The probability of selecting a boy from the 7th grade is 2/4 = 1/2

The probability of selecting a boy from the 8th grade is 3/8

The probability of selecting 1 boy from 7th grade and 1 boy from 8th grade is 1/2*3/8= 3/16