In 2016, Let, the number of boys be 36x Let, the number of girls be 19x ∴ Total students =36x+19x=54x In 2017, number of boys =36x+14440 number of girls =19x+
15
100
×19x=19x×1.15 Total increase in number of students = 1725 According to the question 55x+1725=(36x+1440)+19x×1.15 55x+1725=36x+1440+21.85x 2.85x=285⇒x=100 ∴ Increase in total number of boys =36×100+1440 =3600+1440=5040