A 600 meter long train crosses a signal post in 50 seconds. How long will it take to cross a 3 kilometer long bridge, at the same speed?  Choose the correct choice:	A) 4 min	B) 2 min	C) 8 min	D) 9 min	E) 5 min
S = 600/50= 
<gadget id="calculator">600/50</gadget>
<output>12</output>
12 mps   S= 3600/12= 
<gadget id="calculator">3600/12</gadget>
<output>300</output>
300 sec= 5 min   Answer: 5 min
<result>E</result>
A 600 meter long train crosses a signal post in 50 seconds. How long will it take to cross a 3 kilometer long bridge, at the same speed?