8/3
4/6, 8/12, 16/24 I think you get the point.
11/3 is.
20
66.667%
1/3
an equivalent fraction in two sixes
An equivalent fraction for one fifth would be two tenth if you multiply it by two.
10
the outback covers two-thrids of Australia
2/3 = 0.6666 repeating
One fraction equivalent to 2/3 is 4/6
Equivalent to what? No fraction is "equivalent" by itself; you can say that two or more fractions are equivalent, if they represent the same number.