A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is?	Choose the correct choice from the following answers.
A) 288 m
B) 267 m
C) 888 m
D) 150 m
E) 278 m
Let the length of the train be x meters and its speed be y m/sec.   They, x / y = 15 =&gt; y = x/15   x + 100 / 25 = x / 15   x = 150 m.   Answer: 150 m
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A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is?