Question 35629
The ratio of girls in morning is; {{{2/5}}}
The ratio of boys in morning is; {{{3/5}}}
So we need the same ratio in the afternoon;
{{{2/5}}}= {{{x/30}}}
cross multiply;
5x=60
x=12
So the ratio of girls will be={{{12/30}}}={{{2/5}}}
Now boys;
{{{3/5}}}={{{x/30}}}
5x=90
x=18
So the ratio of boys={{{18/30}}}={{{3/5}}}
So we need ;
12 girls and 18 boys
=)