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A math class had 5 girls and 5 boys in the seventh grade and 1 girl and 7 boys in the eight grade. The teacher randomly selects a seventh grader and an eight grader from the class for a competition.What is the probability that the students she select are both boys?

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josshyaby

Answer:

Step-by-step explanation:

5 girls and 5 boys in the seventh grade and 1 girl and 7 boys in the eight grade

Total number of 7th grade = 10

Prob(boy 7th grade) = 5/10 = 1/2

Total number of 8th grade = 8

Prob(boy 8th grade) = 7/8

Prob(boy 7th and boy 8th) = 1/2×7/8

= 7/16

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