A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 5.4 kilometer long bridge, at the same speed?  Pick.
A) 4 min  B) 2 min  C) 8 min  D) 6 min  E) 3 min
S = 600/40= 
<gadget id="calculator">600/40</gadget>
<output>15</output>
15 mps   S=5400/15= 
<gadget id="calculator">5400/15</gadget>
<output>360</output>
360 sec= 6 min.Answer:6 min
<result>D</result>
A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 5.4 kilometer long bridge, at the same speed?