In a math class of 30 students, 17 are boys and 13 are girls. On a unit test, 4 boys and 5 girls made an A grade. If a student is chosen at random from the class, obtain the probability of choosing a girl or an A student?
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Given : In a math class of 30 students, 17 are boys and 13 are girls.
On a unit test, 4 boys and 5 girls made an A grade.
A student is chosen at random from the class,
To Find : the probability of choosing a girl or an A student
Solution:
Total Students = 30
Boys = 17
Girls = 13
A grade = 4 + 5 = 9
girls with A grade = 5
choosing a girl or an A student = Girls + A grade - girls with A grade
= 13 + 9 - 5
= 17
probability of choosing a girl or an A student = 17/30
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