Question

the no of boys and girls in aclass are in the ratio of 7:5 the no if boys is 8 more than the no of girls what is the rotal strength of the class​

Answer 1

Answer:

48 students

Explanation:

Let number of boys be 7x and girls 5x

ATQ,

7x-5x=8

2x=8

X=4

Number of students=7x+5x=12x=12*4=48

Answer 2

Answer:

Explanation:

Number of girls = X

Number of boys = X+8

The given ratio is 7:5

So 7:5= X+8:X

7/5=X+8/X

By cross multiplication,

7X=5(X+8)

7X-5x=40

2x=40

X=20

No. Of girls = 20

No. Of boys= 28

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