The sum is 23/30
5
7 4/5
It is 19/15 = 1 4/15.
13 and 1 fifth
23/30
six tenths or three fifths
12/12 or 1 whole
17/30
I think 11.3
(Three of anything) plus (another three of it) = (six of the same thing)
one and five tenths or one and a half
1 1/4 or one and a quarter or 1.25