Question 639609
let's the number of the children in the club be {{{x}}}

given: {{{2/5}}} of the children in the club are girls...->...
{{{girls=(2/5)x}}}


{{{(2/5)x +24=x}}}

{{{2x/5 +24=x}}}

{{{2x*5/5 +24*5=x*5}}}

{{{2x +120=5x}}}

{{{120=5x-2x}}}

{{{120=3x}}}

{{{120/3=x}}}

{{{40=x}}}.........there are altogether {{{40}}} children


{{{girls=(2/5)x=(2/cross(5))cross(40)8=2*8=16}}}..there are {{{16}}} girls