The ratio of the number of boys and girls in a school is

The ratio of the number of boys and girls in a school is 8 : 12. If 50% of boys and 25% of girls are getting scholarships for their studies, what is the percentage of school students who are not getting any scholarships ?

Number of boys = 8x
Number of girls = 12x
Students who do not get scholarships :
Boys ⇒ 4x

Girls ⇒ 12x ×	75	= 9x
	100

Their sum = 4x + 9x = 13x

∴ Required percent =	13x	× 100
	20x

= 65%