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 option.
A) 50 kmph
B) 520 kmph
C) 56 kmph
D) 59 kmph
E) 53 kmph
A   50 kmph   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?