Question 1062620
40%+60%=100%


60% is for the proportion of boys.


p is school population:
{{{(60/100)p=720}}}



{{{p=720(10/6)}}}


{{{p=(36*2*10*10)/6}}}


{{{p=1200}}}---------students in the school.



40% of p are girls.
{{{1200*(0.4)}}}
{{{12*4*10}}}
{{{480*girls}}}