Question

in a school 5/9 of the students are boys and the number of girls is 8oo find the number the number of boys​

Answer 1

Answer:

Total no. Of boys is 1000

Step-by-step explanation:

4/9 is girls I. E 800

5/9 is boys

800/4 =200

200*9 = total students=1800

No.ofboys = 1800-800.

=1000

Answer 2

GIVEN :-

In a school 5/9 of the students are boys.

Number of Girls = 800

TO FIND :- Number of Boys

ANSWER :-

• METHOD - 01

Let the number of boys be x

Now

x + 800 = Total students

5/9 of total students = x

So,

$\frac{5}{9} (x + 800) = x \\ \\ \implies 5x + 4000 = 9x \\ \\ \\ \implies 4x = 4000 \\ \\ \\ \implies \boxed{x = 1000}$

There are 1000 boys in the class.

• METHOD - 02

Let total number of students be y

According to the Question ,

If 5/9 part is boys

Then part of girls is 1 - 5/9 = 4/9

$\frac{4}{9} \times y = 800 \\ \\ \\ \implies y = 800 \times \frac{9}{4} \\ \\ \\ \implies y = 200 \times 9 \\ \\ \implies \: y = 1800$

Now number of boys =

Total number of students - Girls

= 1800 - 800

= 1000 (Ans)