four fifths
Three and four-fifths
four fifths
13 and 1 fifth
seven and two fifths
4/10
One fifth PLUS two fifths = 3 fifths
1/5 + 3/5 + 1/5 = 1
14 and 3/5
six and three-fifths
3/5 + 1/5 = 4/5
One fifth plus one fifth is two fifths (2/5).
(Three of anything) plus (another three of it) = (six of the same thing)