Question

in a class, if there are more girls than boys, which of these could be the ratio of girls to the total number of students in the class? a. 2:1 b. 3:5 C. 3:7 d. 3:2​

Answer 1

Answer:

According to me b) 3:5

Because, if we take 3 for girls then 5 = 3+2 were girls are more than boys

Answer 2

Explanation:

We will consider each of the options to see whether or not they make sense, by taking into consideration the fact that the number of girls is greater than the number of boys.

We need to establish in each of the options two key points:

• The number of girls to not be less than the number of boys.
• The total number of students to not be less than the number of girls.

In option a, let the number of girls be 2x and total students be x. This doesn't make any sense at all, for the number of girls cannot be greater than the total number of students.

The same is the logic for option d.

In option c, let the number of girls be 3x, and total number of students be 7x. This implies that

Number of boys = Total number of students - Number of girls = 7x - 3x = 4x, which cannot happen, since we know that the number of girls is greater than the number of boys.

However, in option b, let the number of girls be 3x and total number of students be 5x.

Here, we can establish that

• The number of girls is less than the total number of students. ( 5x > 3x)
• The number of boys is less than the number of girls (5x - 3x = 2x).

Hence, 3 : 5 can be the ratio of girls to the total number of students in the class.

Answer: b. 3 : 5

I hope this helps. :D