Question

Pls answer this question pls...

Answer 1

• Heya Buddy •

No. of students = 15
Let number of boys be y and number of girls be x.

Given that,
x + y = 15
2x - 3 = y
=> 2x - y = 3

By elimination method,
2x - y = 3
x + y = 15
_________
3x = 18
x = 18/3
x = 6.......(i)

Now,
x + y = 15
6 + y = 15
y = 15 - 6
y = 9......(ii)

.°. From (i) and (ii),
No. of boys = 9
No. of girls = 6

• ${Be}^{Brainly}$ •

Answer 2

Total number of students = 15

Number of Boys = 2 times Number of girls minus 3. (given)

let number of boys= x
let number of girls = y

Now
x+y = 15 --eq. 1

x=2y-3 from given equation

now put x=2y-3 in eq. 1

2y-3+y = 15

3y = 18

y = 18/3

y = 6

put y = 6 in eq.1

x + 6 = 15

x = 9

Therefore there are 6 girls and 9 boys