Question

Sound travels at about 330 m/s in air How long would it take sound to travel 80 m.

Answer 1

330 m/s also means
`\frac{330 \text{ m}}{1 \text{ s}}`, which is the same as
`\frac{1 \text{ s}}{330 \text{ m}}`.

If you take that last version and multiply it by 80 m:

`80 \text{ m} \cdot \frac{{1 \text{ s}}}{330 \text{ m}} = (80)/(330) \text{ s}`

80/330 ≈ 0.2424...