Question

can anyone give me the complete explaination and solution of this question?
plz.....

Answer 1

Hey mate !!

Here's your answer !!

Total Number of Students = 10

Number of girls = Number of boys + 4

Let number of girls be 'x' and Number of boys be 'y'

=> x = y + 4

Transposing 'y' to LHS we get,

=> x - y = 4  -----( 1 )

=> x + y = 10 ----( 2 )   ( Given: Boys + Girls = 10 )

Solving (1) and (2) we get,

=> 2x = 14 

=> x = 14 / 2 = 7

Hence Number of girls = 7 girls.

Number of boys = Number of girls - 4

=> y = 7 - 4 = 3 

Hence Number of boys = 3

Hence solved !!

Hope my answer helped you !!

Cheers !! 

Answer 2

Hey Mate...!!!!
Here's ur answer...

Let,
No.of boys be x.
No.of girls be y.

As per given case,
x = y + 4
x – y = 4. ...............(1)
And
x - y = 10. ................(2)
By plotting graph......
We get the lines intersect at point
( 7 , 3 )...
so,

No.of girls = 7
No of. boys = 3
.