Two trains starting at the same time from two stations 200 km apart and going in opposite directions cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds ? Choices:
A) 11:9
B) 11:20
C) 9:20
D) 11:8
E) None of these
Explanation :   In the same time, they cover 110 km and 90 km respectively.   =&gt; Ratio of their speeds = 110 : 90 = 11 : 9   11:9nswer : 11:9
<result>A</result>
Two trains starting at the same time from two stations 200 km apart and going in opposite directions cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds ?