Question

60 % of the total students are boys and total number of girls are 320 .find the total number of students and the number of boys.

Answer 1

Let see your answer !!!!!

Given that

Percentage of boys = 60 %

Number of girls = 320

Let the total number of students be x. Then,

according to question ,

60 % of x + 320 = x

=> 60/100 × x + 320 = x

=> 3x/5 + 320 = x

=> 3x/5 - x = - 320

=> 3x - 5x/5 = - 320

=> - 2x/5 = - 320

=> x = - 320 × 5/-2

=> x = 800

Hence , total number of students = 800.

Number of boys = 60 % of 800

= 480



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Answer 2

$\sf{GIVEN:-}$

Percentage of boys = 60 %

Number of girls = 320

Let the total number of students be x.

Then,

A/Q

60 % of x + 320 = x


60/100 × x + 320 = x


3x/5 + 320 = x


3x/5 - x = - 320


3x - 5x/5 = - 320


- 2x/5 = - 320


x = - 320 * 5/-2


x = 800



Hence , total number of students = 800.

Number of boys = 60 % of 800

= 480