A train speeds past a pole in 15 sec and a platform 130 m long in 25 sec, its length is?
Answers:  A) 195  B) 150  C) 160  D) 170  E) 180
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 + 130)/25 = x/15 =&gt; x = 195 m.   195nswer: Option 195
<result>A</result>
A train speeds past a pole in 15 sec and a platform 130 m long in 25 sec, its length is?