A football trainer uses 6 3/4 ft of medical tape to tape one player’s knee, then uses 3 5/16 ft of tape to tape another player’s ankle. How much tape does the trainer use for both players?
1.] 3 1/16 ft
2.] 9 1/16 ft
3.] 9 2/5 ft
4.] 10 1/16 ft
4.] 10 2/5 ft
tell explanation pls