Question 1110753


	Let Plane	speed=	x	mph							
	let wind	speed=	y	mph							
	with wind , speed=		(x+y)								
	against wind, speed		(x-y)								
	d=	7056		with wind	d/s =t
						
	7056	/	(x+y) 	=	8						
	divide by	8
									
	882	/	(x+y) 	=	1						
	(x+y) 	=	882	............1	
						
	d=	=	6096	against	wind						
	6096/(x-y)	=	8								
	divide by	8
									
	762	/(x-y)	=	1							
		x	-		y	=	762	.............2			
	add up (1) & (2)										
	2	x	=	1644							
	/	2									
	x=	822	mph	speed of Plane	in still air	
				
	plug value of x in (1)										
	we get	y=	60	mph	speed of wind