Question

the total strength of a school is 1,120. the ratio of boys and girls in the school is 4: 3 find the number of boys and the number of girls in the school​

Answer 1

Answer:

No. of boys = 640; No. of girls = 480

Step-by-step explanation:

Let the number of boys = 4x

Let the number of girls = 3x

(We can assume 4x and 3x because 4x and 3x are in the ratio 4:3 and x≠0)

ATQ,

4x + 3x = 1120

7x = 1120

x = 160

No. of boys = 4x = 4*160 = 640

No. of girls = 3x = 3*160 = 480

Answer 2

                                        $\Huge{\boxed{\mathfrak{solution}}$

Given:

• Total strength of a school is 1,120.
• The ratio of boys and girls in the school is 4: 3

To find :

• The number of boys and the number of girls in the school​.

Let's solve,

Let the number of girls are 4$x$ and the

number of boys are 3$x$

So,

Number of girls + Number of boys  = Total strength of school

                 

                  4$x$ + 3$x$ = 1,120

                   7$x$ = 1,120

                   $x=\dfrac{1,120}{7}$

                    $x$ = 160

∴ Number of boys = 4 $x$ = 4 × 160 = 640

  and number of girls = 3 $x$ = 3 × 160 = 480