How many seconds does a train 110 meters long, traveling at 54 km/h, take to completely cross a bridge of 160 meters in length?
Choices.
A) 18
B) 20
C) 22
D) 24
E) 26
54 km/h = 54000/3600= 
<gadget id="calculator">54000/3600</gadget>
<output>15</output>
15 m/s   Time= 270 / 15= 
<gadget id="calculator">270 / 15</gadget>
<output>18</output>
18 seconds   The answer is 18.
<result>A</result>
How many seconds does a train 110 meters long, traveling at 54 km/h, take to completely cross a bridge of 160 meters in length?