Question 471409
Investment I	5.20%		per annum						
Investment II	9.00%		per annum						
									
x		+	y	18000	------------------------1				
5.20%	x	+	9.00%	y	=	$1,430.00			
Multiply by 		100							
5.2	x	+	9	y	=	$143,000.00		--------2	
									
Multiply (1) by			-5.2						
we get									
									
-5.2	x	-5.2	y	=		-93600.00			
									
Add this to (2)									
									
0	x	3.8	y	=		$49,400.00			
									
divide by		3.8							
									
			y	=		$13,000.00		investment at 	9.00%
Balance			$5,000.00					investment at 	5.20%
CHECK									
$5,000.00-------$260.00						
$13,000.00------$1,170.00						
Total---------	$1,430.00