Question 419041
Train speed of B =x				120	miles			
Train speed	ofA=x +	15			150	miles			
										
t=d/r										
120/x=150/(x+15)
120(x+15)=150*x	
120x+1800=150x				
150x-120x=1800				
30x=1800							
/30									
x=60	Train speed	of B						
75 Train speed	of A