<PRE><B>Question 516234</B>
Train I	speed=	1	x		mph						
Train II	speed=	1	x+	3	mph						
											
add up speeds 										
combined speed = 		2	x	+	3		
Time =	5.5	hours			
											
5.5	=(595)/(	2	x	+	3	)	
											
5.5	*(2	x	+	3	)=	(595)
11	x	+	16.5	=	595	 			
11	x	=	595	-	16.5						
11	x	=	578.5								
	x=	578.5	/	11							
	x=	52.59	mph	Train I	speed						
		55.59	mph	Train II	speed						
</PRE>