Subject: mathqa
Question: the jogging track in a sports complex is 1000 meters in circumference . deepak and his wife start from the same point and walk in opposite directions at 20 km / hr and 15 km / hr respectively . they will meet for the first time in ?
Option: 
A: 40 min
B: 35 min
C: 25 min
D: 50 min
Answer: B