The total number of boys in the choir are 21.
This makes 60% of the total members in the choir.
Suppose the total members in the choir are x.
So 60% of x are boys
60% means 60/100 which is 0.6
Hence 0.6x are boys.
But as 60% of the member are boys are 21 boys
So 0.6x = 21
Dividing by 0.6 on both sides, we get
x= 21/0.6
x= 35 members.
Hence there is a total of 35 members in the choir.
