Question 287611
Not enough info
Suppose there are {{{5}}} boys and {{{300}}} girls
Then {{{2/305 + 100/305 = 102/305}}} 
{{{102/305 = .3344}}}  
33.4% wear glasses
Suppose there are {{{50}}} boys and {{{30}}} girls
Then {{{20/80 + 10/80 = 30/80}}}
{{{30/80 = .375}}} 
37.5% wear glasses