a coastline is 367 miles long. One day, 30 School groups pick up trash along the coast. each group cleans up a different part of the coastline. each group's part is the same length a whole number of miles.
question 1: what is the greatest number of whole miles of Coast that anyone could clean up? (Please show work)
question 2: what is the length of the coast that none of the groups cleaned?
(please show work)