A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 7.2 kilometer long bridge, at the same speed?
Pick one:
A) 4 min	B) 2 min	C) 8 min	D) 9 min	E) 3 min
S = 600/40= 
<gadget id="calculator">600/40</gadget>
<output>15</output>
15 mps   S=7200/15= 
<gadget id="calculator">7200/15</gadget>
<output>480</output>
480 sec=8 min.Answer:8 min
<result>C</result>
A 600 meter long train crosses a signal post in 40 seconds. How long will it take to cross a 7.2 kilometer long bridge, at the same speed?