Question

10 students of class 10th took part in a maths quize if the no. Of girls is 4 more than the no. Of boys, no. Of boys and no. Of girls who took parts in the quize ​

Answer 1

Answer:

Let the no. Of boys =x

Let the no. Of girls=y

Total no. Of students =10

According to question

Condition I

X+Y=10---equation 1

Condition II

X=4+Y---equationII

By equation 1st

X+Y =10

(By transposition method)

X=10-Y

Put Y=1;X=10-1=9

(9,1)

Put Y=2;X=10-2=8

(8,2)

From equation 2nd

X=4+Y

Put Y=2;X=4+2=6

(6,2)

Put Y=3;X=4+3=7

(7,3)

After making graph the points will intersect on 3, 7 and thats the answer.