Problem
First name
Aaron
School
Bexley grammar school
Country
Age
0
Filename
With trial and error the solution I created was:
1 min and 2 min people cross (2 minutes)
1 min person returns (1 minute)
7 min and 10 min people cross (10 minutes)
2 min person returns (2 minutes)
2 min and 1 min people cross (2 minutes)
2+1+10+2+2=17mins