A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 9 kilometer long bridge, at the same speed? Options:
A) 4 min
B) 2 min
C) 10 min
D) 9 min
E) 3 min
S = 600/40= 
<gadget id="calculator">600/40</gadget>
<output>15</output>
15 mps   S= 9000/15= 
<gadget id="calculator">9000/15</gadget>
<output>600</output>
600 sec= 10 min.Answer: 10 min
<result>C</result>
A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 9 kilometer long bridge, at the same speed?