Subject: mathqa
Question: two cyclist start on a circular track from a given point but in opposite direction with speeds of 7 m / s and 8 m / s . if the circumference of the circle is 360 meters , after what time will they meet at the starting point ?
Option: 
A: 30 sec
B: 15 sec
C: 1 min
D: 24 sec
Answer: D