A science class has 4 girls and 4 boys in the seventh grade and 5 girls and 7 boys in the eighth grade. The teacher randomly selects 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?

Answer:The correct answer is 5/24 or 0.21Step-by-step explanation:1. Let's review all the information given to answer the question correctly:Science class in seventh grade = 4 girls and 4 boysScience class in eighth grade = 5 girls and 7 boys2. What is the probability that both students selected for the competition are girls,  a seventh grader and an eighth grader?These are independent events, therefore:Probability of two independent events = Probability of A * Probability of BProbability of both students selected for the competition are girls = 4/8 * 5/12Probability of both students selected for the competition are girls = 20/96 = 5/24The correct answer is 5/24 or 0.21