Question

In a college math class of 50 students, 23 are boys and 27 are girls. On the final exam, 15 boys and 14 girls made an A. What is the probability of choosing a boy or an A student if a student is chosen at random from the class? A) 29 50 B) 33 50 C) 37 50 D) 39 50

Answer 1

Answer:C) 37/50.

Explanation:

Add the amount of boys to the amount of girls that made an A, put it over the total of 50. 23 boys + 14 girls with an A = 37/50.

Answer 2

The correct option is C.

Explanation:

Total number of students in the math class = 50

Number of boys = 23

Number of girls = 27

`\text{Probability that a student is boy = }(23)/(50)`

Number of boys who get A = 15

Number of girls who get A = 14

Now, to find required probability we will not consider number of boys getting A because all the boys are taken already.

So, to find probability of students getting A, we take only girls geting A

`\text{Probability that a student gets A = }(14)/(50)`

`\text{So, Probability that a student is boy or gets A = }(23)/(50)+(14)/(50)`

`\bf\textbf{So, Probability that a student is boy or gets A = }(37)/(50)`

Hence, The correct option is C.