Question

if the boys and girls in a school r in the ratio 8:3 if the number of girls is 405 how many boys r there in the school

Answer 1

let no. of girls in the school be 3x
no. of boys be 8x
according to question,
3x=405
x=405/3=135.
hence,no. of boys =8x=8*135=1080.
hope it helps

Answer 2

Answer:

Given that :-

• Ratio of Boys and Girls = 8 : 3

• Number of Girls = 405

To find :-

• Number of Boys

Solution:

• Let the number of boys and girls be 8x and 3x receptively.

$\bold{A.T.Q}$

⇒ 3x = 405

⇒  x = 405/3

⇒  x = 135

Number of Boys = 8x = 8 × 135 = 1080

Hence,

The number of boys are 1080