Question

The number of boys in a class is 13 more than the number of girls in the class.

If there are 77 students in the class, find the number of girls and boys?​

Answer 1

Answer:

${ \bold{ \green{Given}}}$

• Number of boys is 13 more than girls
• In class there are 77 students

${ \bold{ \red{Find}}}$

• Number of boys and girls

${ \bold{ \pink{Solution}}}$

Let take girls as X

Number of boys = 13+x

There are 77 students in class

${ \to{x + 13 + x = 77}}$

${ \to{2x + 13 = 77}}$

${ \to{2x = 77 - 13}}$

${ \to{2x = 64}}$

${ \to{x = \frac{64}{2} }}$

${ \to{x = 32}}$

Number of girls = x = 32

Number of boys = x+13 = 32+13 = 45

Step-by-step explanation:

Verification:-

Total number of students = girls + boys

${ \implies{77 = 32 + 45}}$

${ \implies{77 = 77}}$

Hence proved ✔

Answer 2

Answer:

let no. of girls be X

Step-by-step explanation:

now the no. of boys is X+13

therefore,

X+(13+X)=77

2x+13=77

2X=77-13

2X=64

therefore, X=64/2

hence,X=32......(1)

and no. of boys =X+13

=32+13

=45........(2)

therefore, no. of boys =45

and,no.of girls =32

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