A train speeds past a pole in 15 seconds and speeds past a platform 100 meters long in 25 seconds. Its length in meters is :
Choose the correct choice from the following answers
A) 60m
B) 70m
C) 100m
D) 120m
E) 150m
Let the length of the train be X metres and its speed be Y metres/sec.   Then X/Y=15   Y= X/15   X+100/25   Now,(x+100) /25   =X/15   X=150m   ANSW150mR : 150m
<result>E</result>
A train speeds past a pole in 15 seconds and speeds past a platform 100 meters long in 25 seconds. Its length in meters is :