Question 565838
Loan A	4.25%		per annum	----x					
Loan B	6.00%		per annum	----y		

for 6 years interest interest = 5400
for 1 year it will be 900			
									
x+y=	18000	------------------------1				
4.25%x+6.00%y=$900.00			
Multiply by 		100							
4.25x+6y=$90,000.00		--------2	
									
Multiply (1) by			-4.25						
we get									
									
-4.25	x	-4.25	y	=		-76500.00			
									
Add this to (2)									
									
0	x	1.75	y	=		$13,500.00			
									
divide by		1.75							
									
y	=		$7,714.29		investment at 	6.00%
Balance			$10,285.71		investment at 	4.25%
CHECK									
$10,285.71			$437.14						
$7,714.29			$462.86						
Total			$900.00