Question

In a class of 35 children, the ratio of swimmers to non- swimmers is 6:1, how many of the children are swimmers?

Answer 1

let the children who are non swimmers be x
Then students those are swimmers=6x
Total students=35
6x+x=35
7x=35
Transpose 7 to R.H.S
x=35/7
x=5
So, the children those are non-swimmers are 5 and children those are swimmers are 6x=6×5 that are 30students.

Answer 2

If we take the ratio 6:1 we can take it as 6x:1x then sum of ratio =35

6x+1x=35
7x =35
x=35/7
x=5
number of swimmers=6×x
=6×5
=30