Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 1.10 10-3 rad/s, while the other has an angular speed of 3.50 10-3 rad/s. How long will it be before they meet?

answer in seconds.

how can i find the chng in time if the angular velocity is not given?

for example i have two angular speeds?

angular velocity = (angular speed1 - angular speed 2) / chng in time