Four members from a 45-person committee are to be selected randomly to serve as chairperson, vice-chairperson, secretary, and
treasurer. The first person selected is the chairperson; the second, the vice-chairperson; the third, the secretary; and the fourth, the treasurer. How many different leadership structures are possible?
Let the no. of girls be x and boys be y...... x/y=1/3 =>3x=y ...............(I) now 4 boys leave the class is then x/y-4=2/5 =>5x=2y-8 (I)=>5x=2(3x)-8 x=8 now 3x=y =>y=24 therefore no. of girls is 8 and the no. of boy is 24.............. I have tried my best.....hope i helped............