10
there is five-fifths in one. ten-fifths in two, so there are five two-fifths in two.
One fifth PLUS two fifths = 3 fifths
Ten fifths make two wholes.
minus three fifths
One half is bigger then two fifths.
23
Three and four-fifths
Call it 21 fifths minus 13 fifths, ie 8 fifths which is one-and-three-fifths
Answer: Two fifths, one sixth, and then one third.
One and two fifths.
3.4 or three and two fifths
16.