Question

In school
$\frac{5}{7}$
of the student are doy.if there are 300 girl , find the number of boy in the school

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Answer 1

HEY MATE !!!

here we go :-

given ratio = 5:7 (5/7)

Total no. of girls = 300

let the total number of bøys = x

as we know :-

product of extreme = product of means

5 : 7:: x : 300

300 (7)/ 5

60(7)

= 420

therefore total number of boys is equal to 420

hope it will help you !!!

Answer 2

$\huge\purple{Hello}$

$\large\orange{Solution:-}$

Let the total number of students be x.

No. of boys =$\frac{5}{7}x$

No. of girls = $x - \frac{5}{7}x$ = $\frac{2}{7}x$

According to question,

2/7x = 300

=> x = $\frac{300\times7}{2}$ = 1050

So,

Total no. of students is 1050.

No. of boys = 1050×5/7 = 750 boys

$\large\red{Hope}$$\large\red{it}$$\large\red{helps}$