Question 447401
distance = x								
Time outgoing =		x/	55					
Time returning =		x/	50					
exrta time while returning =			0.20	hour 				
x/50-x/55=0.2		
								
LCD =	2750							
multiply by LCD								
55-50x 	=0.2*2750	
5x=550						
/	5							
x=110							
								
Total travel time =110/55	+110/50
=4.2	hours