How many seconds will a 700 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) 42
D) 11
E) 18
Explanation:   Here distance d = 700 mts   speed s = 63 - 3= 
<gadget id="calculator">63 - 3</gadget>
<output>60</output>
60 kmph= 60 x 5/18 m/s   time t = = 42 sec.   Answer: 42
<result>C</result>
How many seconds will a 700 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 ?