Just Crack Interview
Your Ultimate Interview Preparation Resource
54
x-9 = 5(y-9) {x=dads age, y=sons age today) and today, x=3y => y = 18 and hence x =54
—-
x=3y means, 3y-9=5(y-9) 3y-5y=-45+9 -2y=-36 so y=-36/-2 y=18
=> 3s = d => 5(s-9) = d
therefore 5s-45=3s 2s = 45 s=22.5
hence d= 67.5
Your email address will not be published. Required fields are marked *
Comment *
Name *
Email *
Website
54
x-9 = 5(y-9) {x=dads age, y=sons age today)
and today, x=3y
=> y = 18 and hence x =54
—-
x=3y means,
3y-9=5(y-9)
3y-5y=-45+9
-2y=-36
so y=-36/-2
y=18
=> 3s = d
=> 5(s-9) = d
therefore
5s-45=3s
2s = 45
s=22.5
hence
d= 67.5