Murali travelled from city A to city B at a speed of 70 kmph and from city B to city C at 30 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? Pick one:
A) kmph
B) kmph
C) kmph
D) kmph
E) 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 A to C   = (2x)/70 + (3x)/30   = (6x + 21x)/210 = 27x/210   = x/10 Average speed   = (2x + 3x)/(27x/210) = 38.9 kmph.   Answer: kmph
<result>B</result>
Murali travelled from city A to city B at a speed of 70 kmph and from city B to city C at 30 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?