A class in advanced physics is composed of 10 juniors, 30 seniors, and 10 graduate students. The final grades show that 3 of the juniors, 10 of the seniors, and 5 of the graduate students received an A for the course. If a student is chosen at random from this class and is found to have earned an A, Obtain the probability that he or she is a senior?
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Answer:
1 / 5
Step-by-step explanation:
No. of students = 30 + 10 + 10 = 50
No. of A grade seniors = 10
Probability = 10 / 50
= 1 / 5
Hope it helps.
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