Question 1204383


if the total numbers of girls is {{{g}}}, then without girl who is telling us the sentence above the number of the girls will be 

{{{g-1}}}  .....the number of sisters to "I"

if the girl has two more sisters than brothers ({{{b}}}),

{{{g -1 = b + 2}}}

{{{g = b + 3}}}

 It says that the number of girls in the family is {{{3 }}}more than the number of boys. 

Hence, the oldest brother (the oldest boy) has {{{4}}} more sisters than brothers.