90 because...
4/5=.8
x•.8=72
72/.8=90
(• is a multiplication sign, so you don't get it confused with x, which is equal to 90)
Four fifths IS anumber.
48
12
It is a rational number.
Four fifths of 10 is 8.
nine four fifths
0.8
There is no Mixed Number as there is no Whole Number involved.
4 is.
Expressed as a mixed number in its simplest form, 4/5 + 4/5 = 1 3/5 or one and three fifths.
four fifths.
There are two fifths in four tenths.