Question

The ratio of the number of boys

to the number of girls in Mr.
Jefferson's class is 2 to 3. If there are
18 girls in Mr. Jefferson's class, how
many boys are there?

Answer 1

Let the number of boys and number of girls be 2x and 3x respectively.

Then,

According to question,

Number of girls = 18

or, 3x = 18

or, x = 6

Number of boys = 2x = 12

Therefore, the total number of boys is 12