A train 250 m long passed a pole in 10 sec. How long will it take to pass a platform 1250 m long?  Choose the correct option:	A) 60 sec	B) 90 sec	C) 120 sec	D) 150 sec	E) 180 sec
Speed = 250/10= 
<gadget id="calculator">250/10</gadget>
<output>25</output>
25 m/sec.   Required time= (250 + 1250)/25= 
<gadget id="calculator">(250 + 1250)/25</gadget>
<output>60</output>
60 sec   60 secnswer:60 sec
<result>A</result>
A train 250 m long passed a pole in 10 sec. How long will it take to pass a platform 1250 m long?