<PRE><B>Question 803188</B>
In there hours they both have traveled 270 km. (300-30)

speed of one be x
the speed of other = x-10

they are moving towards each other
so combined speed = x+x-10
=2x-10 km/h

t=d/r

3= 270/(2x-10)

2x-10 = 270/3

2x-10 = 90
2x=90+10
2x=100
x= 50 

speed of one is 50 km/h
the speed of other = 50-10 = 40 km/h</PRE>