How many seconds will a 800 meter long train moving with a speed of 63 km/hr take to cross a man walking with a speed of 3 km/hr in the direction of the train ?	Choose the correct choice from the following answers.
A) 48  B) 36  C) 26  D) 11  E) 18
Explanation:   Here distance d = 800 mts   speed s = 63 - 3= 
<gadget id="calculator">63 - 3</gadget>
<output>60</output>
60 kmph= 60 x 5/18 m/s   time t = = 48 sec.   48nswer: 48
<result>A</result>
How many seconds will a 800 meter long train moving with a speed of 63 km/hr take to cross a man walking with a speed of 3 km/hr in the direction of the train ?