Suman travels from place X to Y and Rekha travels from Y to X, simultaneously, After meeting on the way, Suman and Rekha reach Y and X, in 3 hours 12 minutes and 1 hour 48 minutes, respectively. If the speed of Rekha is 9 km/h, then the speed (in km/h) of Suman is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e.
Time taken by Suman = 3 hours + 12 minutes = 3 + 1/5 = 16/5 hours
Time taken by Rekha = 1 hour + 48 minutes = 9/5 hours,
As one knows that,
Speed of Suman/ Speed of Rekha = √(Time taken by Rekha/Time taken by Suman)
s/9 =
s = .