Question

in a mixed school, the ratio of boys to girls was 15:11. If there were 435 boys, find the number
of girls​

Answer 1

Step-by-step explanation:

15:11 ,where 15 = 435

So, 11 = 435×11//15 = 29×11 = 319

Hence, No. of girls = 319

Answer 2

The number of girls in the mixed school with the given ratio is 435.

Given :

The ratio of boys to girls = 15 : 11

Number of boys = 435

To Find :

Number of girls in the school

Solution :

Let us take "x" as the proportion constant to evaluate the ratio.

As the ratio between the number of boys and girls in the school is 15 : 11, we can safely assume with a constant of proportion "x" as :

Number of boys = 15x

Number of girls = 11x

It is given that the count of boys in the school is 435. Thus, we can equate it as :

                      $15 * x = 435$

                             $x = 435 / 15$

                             $x = 29$

By finding x, we can then find the number of girls in the school as :

                              $= 11 * x$

                              $= 11 * 29$

                              $= 319$

Hence, the number of girls in the mixed school is 319.

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