Two persons start running simultaneously around a circular track of length 200 m from the same point at speeds of 15 km/hr and 25 km/hr. When will they meet for the first time any where on the track if they are moving in opposite directions ?
Options
A) 27 sec B) 17 sec C) 18 sec D) 22 sec E) 37 sec
Explanation:   Time taken to meet for the first time anywhere on the track   = length of the track / relative speed   = 200 / (15 + 25)5/18 = 200x 18 / 40 x 5 = 18 seconds.   Answer: 18 sec
<result>C</result>
Two persons start running simultaneously around a circular track of length 200 m from the same point at speeds of 15 km/hr and 25 km/hr. When will they meet for the first time any where on the track if they are moving in opposite directions ?