How long does a train 100 m long traveling at 54 kmph takes to cross a station of 250 m in length?  Choose the correct choice.
A) 22 sec
B) 20 sec
C) 15 sec
D) 23 sec
E) 16 sec
23 sec = 100 + 245= 
<gadget id="calculator">100 + 245</gadget>
<output>345</output>
345 m   S= 54* 5/18= 
<gadget id="calculator">54* 5/18</gadget>
<output>15</output>
15   T= 345 * 1/15= 
<gadget id="calculator">345 * 1/15</gadget>
<output>23</output>
23 sec   ANSWER:23 sec
<result>D</result>
How long does a train 100 m long traveling at 54 kmph takes to cross a station of 250 m in length?