Question 474902
Investment I	3.00%		per annum						
Investment II	4.00%		per annum						
									
x+y=3500	------------------------1				
3.00%x+4.00%y=$115.00			
Multiply by 		100							
3x+4y=$11,500.00--------2	
									
Multiply (1) by	-3						
we get									
									
-3x-3y	=-10500.00			
									
Add this to (2)									
									
0	x	+1	y	=		$1,000.00			
y=	P1,000.00		investment at 	4.00%
Balance	P2,500.00		investment at 	3.00%