POSSIBLE SCORES
Alice 16
6,10
7,9
(8+8 won't work because that would be a repeating number)
Ben 4
1,3
(2+2 won't work because that would be a repeating number)
Cindy 7
1,6
2,5
3,4
Dave 11
1,10
2,9
3,8
4,7
5,6
Ellen 17
7,10
8,9
Since the only possibilities for Ben is hitting 1 and 3, all other people can't hit 1 or 3.
Alice 16
6,10
7,9
Cindy 7
2,5
Dave 11
2,9
4,7
5,6
Ellen 17
7,10
8,9
Since the only possibilities for Cindy is hitting 2 and 5, all other people can't hit 2 or 5.
Alice 16
6,10
7,9
Dave 11
4,7
Ellen 17
7,10
8,9
Since the only possibilities for Dave is hitting 4 and 7, all other people can't hit 4 or 7.
Alice 16
6,10
Ellen 17
8,9
Ellen must have hit 8 and 9. Alice must have hit 6 and 10.
Alice hit 6 points.