Question 739589
Let s be samuel's age now
let x be the brother's age now
s=2/3x
in five years samuels age will be s+5
in five years brothers age will be x+5
s+5=3/4(x+5)
2/3x+5=3/4(x+5)
multiply by 12
24/3x+60=3*12/4(x+5)
8x+60=9x+45
15=x
s=2/3x=2/3*15=10

s=10 x=15
in five years
15  and 20
check

15=3/4 *20
15=15
ok