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igomit [66]
3 years ago
11

A math class has 3 girls and 7 boys in the 7th grade and 5 girls and 5 boys in the 8th grade the teacher randomly selects a seve

nth grader and an 8th grader from the class for a completion what is the probability that the students she selects are both girls
Write your answer as a fraction
Mathematics
1 answer:
Minchanka [31]3 years ago
8 0
In the 7th and 8th grade combined, there 3+5 girls = 8 girls, and 7+5 boys = 12 boys. If there are only boys and girls, then there are 12+8=20 students in all. 

The fraction of girls out of the total is P = 8/20 = 2/5.
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