Two persons start running simultaneously around a circular track of length 700 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?  Select the correct option:  A) 16 seconds  B) 28 seconds  C) 49 seconds  D) 57 seconds  E) 63 seconds
Time taken to meet for the first time anywhere on the track   = length of the track / relative speed   = 700 / (15 + 25)5/18 = 700* 18 / 40 * 5   = 63 seconds.   Answer:63 seconds
<result>E</result>
Two persons start running simultaneously around a circular track of length 700 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?