Question

in class of 56 students the number of boys is 2/5 of the number of girls find the number of biys and girls​

Answer 1

Answer:

Number of boys = 40

Number of girls = 16

Step-by-step explanation:

Total number of student = 56

Let the number of Girls be = x

Then number of boys will be =  $\frac{2}{5}x$

According to question:-

$x+\frac{2}{5}x = 56$

$\frac{5}{5}x + \frac{2}{5}x = 56$                                            ------------{by taking LCM}

$\frac{7}{5}x = 56$

$7x=56$ × $5$

$x=56$ × $\frac{5}{7}$

$x = 8$ × $5$                                               ------------   {56 is divided by 7}

$x = 40$

So,

number of girls = x  = 40

Number of boys = $\frac{2}{5}$ × x

= $\frac{2}{5}$ × 40

= 2 × 8

= 16