The third and final outfit: when the trip's length and pace are known and the question is how long, the formula turns once more — $t = \dfrac{d}{v}$, read aloud t equals d over v. The road, divided by how fast you eat it. 60 metres at 3 metres per second: $60 \div 3 = 20$ seconds. Every “are we there yet” ever asked is this formula, waiting to be written down.

Run the units check again: $\mathrm{m}$ over $\mathrm{m/s}$ — the metres cancel and seconds remain. Three outfits, one fact: $v = \dfrac{d}{t}$, $d = v\,t$, $t = \dfrac{d}{v}$. Own all three and this chapter cannot surprise you.