How many seconds will a 650 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 options.
A) 48 B) 36 C) 26 D) 39 E) 18
Explanation:   Here distance d = 650 mts   speed s = 63 - 3= 
<gadget id="calculator">63 - 3</gadget>
<output>60</output>
60 kmph= 60 x 5/18 m/s   time t = = 39 sec.   Answer: 39
<result>D</result>
How many seconds will a 650 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 ?