A train speeds past a pole in 15 sec and a platform 110 m long in 25 sec, its length is? Select the correct option:	A) 50 m	B) 165 m	C) 200 m	D) 300 m	E) None of these
Let the length of the train be x m and its speed be y m/sec.   Then, x/y = 15 =&gt; y = x/15   (x + 110)/25 = x/15 =&gt; x = 165 m.   ANSWER:165 m
<result>B</result>
A train speeds past a pole in 15 sec and a platform 110 m long in 25 sec, its length is?