Train X crosses a stationary train Y in 60 seconds and a pole in 25 seconds with the same speed. The length of the train X is 300 m. What is the length of the stationary train Y?
Choose the correct choice from the following answers:	A) 185 m	B) 420 m	C) 167 m	D) 176 m	E) 168 m
Let the length of the stationary train Y be LY   Given that length of train X, LX = 300 m   Let the speed of Train X be V.   Since the train X crosses train Y and a pole in 60 seconds and 25 seconds respectively.   =&gt; 300/V = 25 ---&gt; ( 1 )   (300 + LY) / V = 60 ---&gt; ( 2 )   From (1) V = 300/25= 
<gadget id="calculator">300/25</gadget>
<output>12</output>
12 m/sec.   From (2) (300 + LY)/12= 60   =&gt; 300 + LY = 60 (12) = 720   =&gt; LY = 720 - 300= 
<gadget id="calculator">720 - 300</gadget>
<output>420</output>
420 m   Length of the stationary train= 420 m   Answer:420 m
<result>B</result>
Train X crosses a stationary train Y in 60 seconds and a pole in 25 seconds with the same speed. The length of the train X is 300 m. What is the length of the stationary train Y?