Question 468804
let him leave 	x		
wife	  3/ 7	x		
remainder	  4/ 7	x		
Brother =	  1/ 2	*	 4/7	x
				
Balance =	 4/7	-	  2/ 7	x
Balance =	  2/ 7	x		
				
  2/ 7	x/	3	=	400
  2/21	x=	400		
x=	4200			
				
wife gets 	 3/7	*	4200	
wife gets 	1800