A train approaches a tunnel AB. Inside the tunnel is a cat located at a point that is 3/8 of the distance AB measured from the entrance A. When the train whistles the cat runs. If the cat moves to the entrance of the tunnel A, the train catches the cat exactly at the entrance. If the cat moves to the exit B, the train catches the cat at exactly the exit. The speed of the train is greater than the speed of the cat by what order?	Answers:
A) 3 : 1
B) 4:1
C) 5:1
D) None of these
E) Cannot be determined
Explanation :   Let tunnel = 8 km and speed of the cat is 1 km/hr.   Time taken to reach entrance of tunnel by cat = 3 hr   Time taken to reach exit of tunnel by cat = 5 hr   Train will cover the sum ( length of tunnel) = 2 hr.   Therefore, ratios of speeds of train and cat = 4 : 1   =&gt; Speed of the train is greater by 3 : 1 than that of the cat.   3 : 1nswer : 3 : 1
<result>A</result>
A train approaches a tunnel AB. Inside the tunnel is a cat located at a point that is 3/8 of the distance AB measured from the entrance A. When the train whistles the cat runs. If the cat moves to the entrance of the tunnel A, the train catches the cat exactly at the entrance. If the cat moves to the exit B, the train catches the cat at exactly the exit. The speed of the train is greater than the speed of the cat by what order?