<PRE><B>Question 1177790</B>
Sarah a total of 7 people took the trip.
let number of coach class tickets be x
first class tickets be y

x+y=7

She was able to purchase coach tickets for ​$150 and first class tickets for ​$970.

total budget  ​$5150. 

150x +970y = 5150

	x	+		y	=	7.00						
												
												
150.00	x	+	970.00	y	=	5150.00	.............2					
Eliminate 	y											
multiply (1)by		-970.00										
Multiply (2) by		1.00										
-970.00	x		-970.00	y	=	-6790.00						
150.00	x		970.00	y	=	5150.00						
Add the two equations												
-820.00	x				=	-1640.00						
/	-820.00											
x	=	2.00										
plug value of			x	in (1)								
	x	+		y	=	7.00						
2.00		+		y	=	7.00						
			1.00	y	=	5.00						
				y	=	5.00						
Ans	x	=	2.00									
	y	=	5.00									
	2.00	coach class tickets										
	5.00	First class tickets										


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