A train speeds past a pole in 15 seconds and a platform 150 meters long in 25 seconds. What is the length of the train (in meters)?  Options.
A) 205
B) 215
C) 225
D) 235
E) 245
Let the length of the train be x meters.   The speed of the train is x / 15.   Then, x + 150 = 25*(x / 15)   10x = 2250   x = 225 meters   The answer is 225.
<result>C</result>
A train speeds past a pole in 15 seconds and a platform 150 meters long in 25 seconds. What is the length of the train (in meters)?