Four less than one third of an unknown number is no less than a quarter of the same unknown number.

Which of the following inequality fits the description above?

Let x be the unknown number.

According to the problem, "four less than one third of an unknown number" can be written as (1/3)x - 4.

And "no less than a quarter of the same unknown number" can be written as (1/4)x.

So the complete inequality is:

(1/3)x - 4 ≥ (1/4)x

To solve for x, we can start by getting rid of the fractions by multiplying both sides by 12 (the least common multiple of 3 and 4):

4x - 48 ≥ 3x

Subtracting 3x from both sides:

x - 48 ≥ 0

Adding 48 to both sides:

x ≥ 48

Therefore, the inequality that fits the description above is:

x ≥ 48