Question

In a class there are 40% boys and number of girls is 120.Fine total number of students in the class.​

Answer 1

$\huge \fcolorbox{green}{red}{ \bf \blue{200 \: students}}$

Step-by-step explanation:

QUESTION :-

In a class there are 40% boys and number of girls is 120. Find the total number of students in the class.

_________________________

SOLUTION :-

Let us consider the total number of students in the class as x .

And,

if 40% are boys, so 60% will be girls (100% - 40% = 60%)

Now,

60% of total students = number of girls

=> 60% of x = 120

=> 60% × x = 120

$= > \bf\frac{60}{100} \times x = 120 \\ \\ = > \bf60 \times x = 120 \times 100 \\ \\ = > \bf x = \frac{ \cancel{ 120}^{ \: 2} \times 100 }{ \cancel{60}}$

=> x = 2×100

=> x = 200

So,

total number of students in the class = 200.

Hope it helps.

#BeBrainly :-)