Murali travelled from city A to city B at a speed of 40 kmph and from city B to city C at 60 kmph. What is the average speed of Murali from A to C given that the ratio of distances between A to B and B to C is 2 : 3?	Choose the correct choice from the following options: A) 50 kmph B) 60 kmph C) 40 kmph D) 70 kmph E) 80 kmph
A   Let the distances between city A to B and B to C be 2x km and 3x km respectively.   Total time taken to cover from 50 kmph to C   = (2x)/40 + (3x)/60 = (6x + 6x)/120 = 12x/120 = x/10 50 kmphverage speed = (2x + 3x)/(x/10) = 50 kmph.
<result>A</result>
Murali travelled from city A to city B at a speed of 40 kmph and from city B to city C at 60 kmph. What is the average speed of Murali from A to C given that the ratio of distances between A to B and B to C is 2 : 3?