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 6 : 3?	Choose the correct answer:
A) 16 B) 45 C) 277 D) 92 E) 11
Let the distances between city A to B and B to C be 6x km and 3x km respectively.   Total time taken to cover from A to C   = (6x)/40 + (3x)/60 = (18x + 6x)/120 = 24x/120 = x/5 Average speed = (6x + 3x)/(x/5) = 45 kmph.   Answer:45
<result>B</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 6 : 3?