Question 1177788


let number of quarters be x
and dimes  be y. 
x+y=60

The total value is $12.30. 
25x+10y = 1230  ( in cents)

	x	+		y	=	60.00		
								
								
25	x	+	10	y	=	1230.00	.............2	
Eliminate 	y							
multiply (1)by		-10.00						
Multiply (2) by		1.00						
-10	x		-10	y	=	-600.00		
25	x		10	y	=	1230.00		
Add the two equations								
15.00	x				=	630.00		
/	15.00							
x	=	42						
plug value of			x	in (1)				
1.00	x	+	1.00	y	=	60.00		
42.00		+	1.00	y	=	60.00		
			1.00	y	=	18.00		
				y	=	18.00		
Ans	x	=	42					
	y	=	18					
	42	quarters						
	18	dimes