Two cyclist start on a circular track from a given point but in opposite direction with speeds of 7m/s and 8m/s. If the circumference of the circle is 180meters, after what time will they meet at the starting point? Choose the correct choice from the following choices:
A) 20sec  B) 12sec  C) 30sec  D) 50sec  E) 1min
They meet every 180/7+8 = 12sec   Answer is 12sec
<result>B</result>
Two cyclist start on a circular track from a given point but in opposite direction with speeds of 7m/s and 8m/s. If the circumference of the circle is 180meters, after what time will they meet at the starting point?