Question

in a school there are 500 students out of these 275 or boys and the rest are girls find the ratio of the girls to that of the boys

Answer 1

500-275 = 225 no. of girls so
275:225
in lowest terms=55:45

Answer 2

The total number of student =500
Number of boys=275
And,
number of girls=500-275
=225

So,
the ratio between the boys and girls is
275:225
=55:45