How many seconds will a 600 meter long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?
Choose the correct answer.
A) 700
B) 288
C) 500
D) 277
E) 121
Let length of tunnel is x meter   Distance = 600+x meter   Time = 1 minute = 60 seconds   Speed = 78 km/hr = 78*5/18 m/s = 65/3 m/s   Distance = Speed*Time   600+x = (65/3) * 60   600+x = 20 * 65= 
<gadget id="calculator">20 * 65</gadget>
<output>1_300</output>
1300   x= 1300 - 600= 
<gadget id="calculator">1300 - 600</gadget>
<output>700</output>
700 meters   700nswer: 700
<result>A</result>
How many seconds will a 600 meter long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?