(9x60).(t+30) = (27x60)(t)
that is the equation you need to solve for in order to find out how long it will take Seth and Mack to meet. Once you find t you plug back in the left or the right side of the equation to find the distance. Hope this helps.
t is the time in minutes.
John N.
Do I take 15mins in seconds [900] and multiply that by 27 to then get [24,300] to then convert to miles? for which I get 15.1 miles.05/20/19
John N.
What is the distance though? Thank you for your response by the way.05/20/19