Question 558774
x		+	y	20000	------------------------1				
3.00%	x	+	4.00%	y	=	$650.00			
Multiply by 		100							
3	x	+	4	y	=	$65,000.00		--------2	
									
Multiply (1) by			-3						
we get									
									
-3	x	-3	y	=		-60000.00			
									
Add this to (2)									
									
	y	=		$5,000.00			
									
	investment at 	4.00%
Balance			$15,000.00					investment at 	3.00%
CHECK									
$15,000.00			$450.00						
$5,000.00			$200.00						
Total			$650.00