Question 427001
Personal Loan = $x
Stanford Loan  $y


x+y=	18000	.............1				
11%ofx +7%ofy = 1660
Multiply by 100	
11x+7y=166,000			
7y=166000-11x---------2				
/7									
y=23714.29-1.57x					
Plug the value of y in (1)											
x+(23714.29-1.57	x)=18000
x+23714.29-1.57	x=18000			
x-1.57x=	18000-23714.29				
-0.57x=-5714.29								
/-0.57									
x=10000	at 11%									
Plug the value of x in (1)											
x+y=18000					
10000+y	=18000				
y=8000	at7%