Two trains, one from P to Q and the other from Q to P, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is	Choose the correct choice from the following answers:
A) 4:3
B) 3:4
C) 2:4
D) 4:2
E) 2:5
Req ratio = root(16):root of(9)=4:3   4:3NSWER 4:3
<result>A</result>
Two trains, one from P to Q and the other from Q to P, start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is