A train traveling at 100 kmph overtakes a motorbike traveling at 64 kmph in 40 seconds. What is the length of the train in meters?
Choose one
A) 400 meters  B) 1111 meters  C) 1777 meters  D) 1822 meters  E) None of these
Relative speed of the train with respect to the motorbike should be the speed with which the length of the train is covered in 40 secs.   Calculate the relative speed =&gt; 100 - 64= 
<gadget id="calculator">100 - 64</gadget>
<output>36</output>
36 kmph and time is 40 sec= 40/3600 hrs   Distance (in this case the length of the train ) = S*T = 36*40/3600   .4 km or 400meters.   So 400 metersnswer (400 meters)
<result>A</result>
A train traveling at 100 kmph overtakes a motorbike traveling at 64 kmph in 40 seconds. What is the length of the train in meters?