Question 630974
x		First Class						
y		Coach class						
Total	passengers							
1	x	+	1	y	=	79	.............1	
Total fare for all passengers								
85	x	+	60	y	=	5290.00	.............2	
Eliminate	y							
multiply (1)by		-60						
Multiply (2) by		1						
-60	x		-60	y	=	-4740		
85	x	+	60	y	=	5290		
Add the two equations								
25	x				=	550		
/	25							
x	=	22    						
plug value of			x	in (1)				
1	x	+	1	y	=	79		
22		+		y	=	79		
				y	=	79		-22
				y	=	57		
						
22		First Class	passengers				
57		Coach class	passengers			
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