Question 953745
if in a school of {{{1302}}} students, {{{798}}} are girls, then there are {{{1302-798=504}}} boys

the ratio of the number of boys to the number of girls is {{{504/798=12/19}}}

both {{{504}}} and {{{798}}} are divisible by {{{42}}}
{{{504/42=12}}} and
{{{798/42=19}}}

so, ratio boys to girls is {{{12:19}}}