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12 October, 13:12

A math class has 4 girls and 4 boys in the seventh grade and 7 girls and 3 boys in the eighth grade. The teacher randomly selects a seventh grade and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls?

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  1. 12 October, 15:08
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    1 1/5

    Step-by-step explanation:

    4 g 4 b (8)

    7 g 3 b (10)

    1/2 for seventh, 7/10 for eighth

    Change 1/2 to 5/10 to be able to add.

    7/10 + 5/10 = 12/10 - -> 1 1/5
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