Which of the following trains is the fastest?
Pick one.
A) 25 m/sec B) 1500 m/min C) 90 km/hr D) None of these E) Cannot be determined
25 m/sec = (25*18/5)km/hr=90km/hr.   And, 25 m/sec=(25*60)m/min=1500 m/min.   So, all the three speeds are equal.   Correct Option: None of these
<result>D</result>
Which of the following trains is the fastest?