A science class has 3 girls and 5 boys in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly sel

Question

3 years ago

6

A science class has 3 girls and 5 boys in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly sel

ects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls? Write your answer as a fraction in simplest form.

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1 answer:

attashe74 [19] · Answer 1 · 2021-12-20T21:30:06+03:00

attashe74 [19]3 years ago

8 0

Probability that the 7th grader is a boy = number of boys/(total kids) = 4/(4+4) = 1/2

Probability that the 8th grader is a boy = 5/(5+7) = 5/12

Probability that both are boys = 1/2*(5/12) = 5/24 or 20.8%

I hope this helps!