One quart is one quarter of a gallon.
1/4 is the fraction of a quart of a gallon.
The fractional representation of 1 gallon is 1 gallon. If you want it as a decimal fraction of some other quantity then you need to specify that second quantity.
It is 1/4.
1 cup = 1/16 of a gallon
One quart is one quarter of a gallon.
There is no fraction. At best, you could write it, in ratio form, as 1/1 gallon. But that does not make it a fraction!
0.06 gallon
It can be. 2 cups is a fraction of a gallon.
1/4 is the fraction of a quart of a gallon.
The fractional representation of 1 gallon is 1 gallon. If you want it as a decimal fraction of some other quantity then you need to specify that second quantity.
A quart is 1/4 of a gallon.
There is not enough information. If you want a fraction, there needs to be another thing to compare it with e.g. what fraction of a gallon is a pint? 1/8 what fraction of a gallon is a quart? 1/4 But you can't say what faction is a gallon without stating what you are comparing it with.
That is 2 quarts.
1/16
It is 1/4.
It's 1/32 of it. That's 0.03125 of the gallon.