Question

In class A ratio of boys and girls is 7:5 whereas in class B this ratio is 5:3. It

is known that in class B number of students is double to that of number of

students in class A. If for today both class are combined, what will be ratio of

boys to girl in combined class?​

Answer 1

Answer:

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Answer 2

Answer:

7x+5x = 2x(5x+3x)

12x=2x×8x

2x=12/8

2x=3/2×2

x=3

now you can find 7x,5x after finding add the both and then find 2x(5x+3x )=48

no.of boys = 21+15=36

no. of girls = 15+15 =30

ratio = 36:30