Question

Ratio of boys to girls is 2 to 3. There are 18 in the class. How many kids are in the class?

Answer 1

Answer:

27

Step-by-step explanation:

ratio of boys and girls=2:3

there are 18 in the class

kids in class=?

2:3=18:x

product of mean equal to product of extreme

2x=54

x=54/2=27

Answer 2

Answer:

The number of girls in the class is 27

Step-by-step explanation:

Ratio of boys to girls is 2:3

The number boys be 2x

where, 2x=18

x=18/2=9

⇒x=9----i

Let the number of girls be 3x----ii

SUBSTITUTING THE VALUE OF i IN ii

3x=3(9)=27