Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 18 hours and 8 hours respectively. The ratio of their speeds is
Choose the correct option:	A) 4 : 9	B) 4 : 3	C) 4 : 12	D) 4 : 8	E) 4 : 5
Let us name the trains as A and B. Then, (4 : 9's speed) : (B's speed) = b : a = 8 : 18 = 4 : 9.
4 : 9nswer: 4 : 9
<result>A</result>
Two trains, one from Howrah to Patna and the other from Patna to Howrah, start simultaneously. After they meet, the trains reach their destinations after 18 hours and 8 hours respectively. The ratio of their speeds is