A train 90m long is running at 20kmph. In how much time will it pass a platform 80m long?  Choose the correct answer
A) 15.6 seconds	B) 24.6 seconds	C) 28.6 seconds	D) 13.6 seconds	E) 35.6 seconds
13.6 secondsistance travelled = 90 + 80= 
<gadget id="calculator">90 + 80</gadget>
<output>170</output>
170m
Speed= 20 * 5/8 = 25/2m
Time = 170 * 2/25= 
<gadget id="calculator">170 * 2/25</gadget>
<output>68/5 = around 13.6</output>
13.6 Seconds
Answer : 13.6 seconds.
<result>D</result>
A train 90m long is running at 20kmph. In how much time will it pass a platform 80m long?