A train 210 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 120 meters long is?  Answers:
A) 29
B) 22
C) 48
D) 99
E) 11
D = 210 + 120= 
<gadget id="calculator">210 + 120</gadget>
<output>330</output>
330   S= 54 * 5/18= 
<gadget id="calculator">54 * 5/18</gadget>
<output>15</output>
15 mps   T= 330/15= 
<gadget id="calculator">330/15</gadget>
<output>22</output>
22 sec   Answer: 22
<result>B</result>
A train 210 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 120 meters long is?