In a class of 52 students, the number of boys is $\frac{ 6}{7}$ of the number of girls find out the number of boys.
Given:
Total students = 52
The number of boys = $\frac{ 6}{7}$ of the number of girls
To do: Here we have to find the number of boys.
Solution:
Let the number of girls be = $x$
Number of boys = $\frac{6}{7}\ \times$ Number of girls = $\frac{6x}{7}$
Now,
Total students = 52
$x\ +\ \frac{6x}{7}\ =\ 52$
$\frac{7x\ +\ 6x}{7}\ =\ 52$
$\frac{13x}{7}\ =\ 52$
$x\ =\ 52\ \times\ \frac{7}{13}$
$x\ =$ 28
So,
The number of girls = $x$ = 28
Number of boys = $\frac{6x}{7}$ = 24
Therefore, the number of boys is 24.
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