Question

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

Answer 1

Answer:

Step-by-step explanation:

LET THE COMMON MULTIPLE BE X

THEREFORE

8X AND 3X

THEREFORE 3X= 405

X=405/3

X=135

THEREFORE NUMBER OF BOYS = 8X AND X= 135

THEREFORE

NUMBER OF BOYS = 8*135

=1080

Answer 2

Step-by-step explanation:

Let boys be B and Let girls be G,

B:G =8:3

B = 8x

G = 3x

G=405

3x=405

x=135

B = 8x

   = 8 × 135

   =1080

Therefore, there are 1080 boys in the school

Let us check,

B:G=8:3=405:135=405/135

405/135 = 8/3 = 8:3

Hence checked,

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