Question 472240
x+y80000	------------------------1				
4.00%x+	2.00%y=$2,500.00			
Multiply by 	100							
4x+2y=	$250,000.00		--------2	
									
Multiply (1) by			-4						
we get									
									
-4x-4y=		-320000.00			
									
Add this to (2)									
									
-2y=	-$70,000.00			
									
divide by	-2							
									
y=$35,000.00		investment at 	2.00%
Balance			$45,000.00	investment at 	4.00%

CHECK				Interest					
$45,000.00			$1,800.00						
$35,000.00			$700.00						
Total			$2,500.00