Fifteen is no more than a number t divided by 5

An inequality may be used to model the given situation. The phrase, "no more than" implies "less than or equal to". Therefore, the inequality is:

15 ≤ t / 5

Solving the inequality of t, we get:

t ≥ 75

This means that the number t is at least 75 (the phrase at least implies greater than or equal to)