Question 491286
Investment I	9.00%		per annum	---x					
Investment II	4.00%		per annum	---y					
									
x		+	y=	16000000	------------------------1				
9.00%	x	+	4.00%	y	=	990000			
Multiply by 		100							
9	x	+	4	y	=	99000000--------2	
									
Multiply (1) by			-9						
we get									
									
-9	x	-9	y	=		-144000000.00			
									
Add this to (2)									
									
0	x	-5	y	=		-45000000			
									
divide by		-5							
									
y	=		9000000		investment at 	4.00%
Balance			7000000		investment at 	9.00%


CHECK									
7000000			630000.00						
9000000			360000.00						
Total			990000.00