<PRE><B>Question 434148</B>
John	x 	mph								
Brian	x+	10								
..										
They are going away from each other.										
										
So add up their speed.										
										
combined speed = x+x+10					
(2x+10)					
Time = 	1	hours								
Distance =   	50	miles								
Distance = speed * time										
(2x+10)*1=50		
2x+10=50					
2x=50-10					
2x=40							
/2									
x=20mph	John			
Brian	20+10=30mph	</PRE>