Question

the number of boys and girls is in the ratio of7: 3 .the no.of boys is 3 more than twice the no of girls find the class strength.​

Answer 1

Step-by-step explanation:

THIS IS UR ANSWER AND PLS MARK ME THE BRAINILIST

Answer 2

Step-by-step explanation:

Let 7x be the no. of boys and 3x be the no. of girls.

According to the question,

7x=3+2×3x

7x=3+6x

7x-6x=3

x=3

Therefore, no. of boys=7×3=21

and,no. of girls=3×3=9

Hence,the class strength=no. of boys+no. of girls

=21+9

=30