Question

If 4:6 is the ratio of number of girls and boys in a computer coaching class.if 50% of girls and 40% of boys are degree holders then the percentage of the candidates who are non-degree holders is:

Answer 1

let x be reference
then boys numbers in coaching class=6x
girls=4x
50% of girls are degree holders =2xgirls are degree holders
40% of boys are degree holders=12x/5
total candidates are degree holders=2x+12x/5=22x/10
% students having degree=(22x/10)/10x×100=(2.2x/10)×100=22%
________________
hope it will help you