Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds i
Choose the correct answer:
A) 1:3
B) 3:2
C) 3:4
D) 4:2
E) None of these
Explanation:   Let the speeds of the two trains be x m/sec and y m/sec respectively.   Then, length of the first train = 27x metres,   and length of the second train = 17y metres.   27x +17y / x + y =23   27x + 17y = 23x + 23y   4x = 6y   x/y=3/2   ANSWER IS 3:2
<result>B</result>
Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds i