Question 685046
biker speed	=	12	mph										
windspeed	=	x	mph										
													
speed against	wind	12	-	x									
speed with	wind	12	+	x									
													
Distance against	wind	8	miles										
Distance with	wind	14	miles										
													
t=d/r	time against = time with		wind	-									
8/(12-x	)=14/(12+x)8	
8(	12	+	x 	)=	14	(12	-x	)			
96	+	8	x	=	168	-	-14	x					
14	x	8	x		168	+	-96						
22	x	=	72										
/	22												check
x	=	3.27	mph	wind	speed