Question 558748
brother's age	x												
													
sons age	x												
fathers age	x+26										
	3	years later											
sons age	x+3										
fathers age	x+26+3	=x+29	

if son is 1/3 of father's age , father is 3 times sons age		
fathers age	3	times older											
x+29=3(x+3)		
x+29=3x	+9				
3x-x=29	-9					
2x=20								
/2										
x=10	sons age								
x	+	26		=	36	years		fathers age