volume_mute
Gasoline Leak – Soil Sample Depth
publish date: 2026/05/05 08:08:36.777812 UTC
volume_mute
Inspectors took soil samples to check a leaking gasoline tank. The first sample was taken 6 feet below ground level, and more were taken every 6 feet after that.
The 14th sample was the first one that showed no signs of gasoline. How far below ground level was that? Use a signed number.
Correct Answer
-84 ft
Explanation
Each sample is 6 ft deeper, so use multiplication:
\[ 14 \times (-6) = -84 \]
The 14th sample was taken 84 feet below ground level (\(-84\) ft).
Reference
Mathematics for college students, go-math-science.com