Question

In a class of 60 students, 35 are boys. What is the ratio of girls to boys in the class?

A) 25:35
B) 5:7
C) 7:5
D) 35:25

Answer 1

The number of girls in a class of 60 students where there are 35 boys is 25. The ratio of girls to boys is therefore 25:35, which simplifies to 5:7. This corresponds to option B) 5:7.

Step-by-step explanation:

To find the ratio of girls to boys in a class, we must calculate the number of girls first. Since there are 60 students in total and 35 are boys, the number of girls can be found by subtracting the number of boys from the total number of students:

Number of girls = Total number of students - Number of boys

Number of girls = 60 - 35 = 25

Now that we have both numbers, we can compare them to find the ratio of girls to boys:

Ratio of girls to boys = Number of girls : Number of boys

Ratio of girls to boys = 25 : 35

This ratio can be simplified by dividing both sides by the greatest common divisor, which is 5:

Ratio of girls to boys = (25 ÷ 5) : (35 ÷ 5) = 5 : 7

Therefore, the ratio of girls to boys in the class is 5:7, which corresponds to option B) 5:7.