Question

The above scatterplot shows the relationship between Air Pressure and Elevation. Given the sea level air pressure as $29.2$ inches of mercury, Find the approximate difference between the pressure at sea level and the pressure at the death zone threshold?

• A. $7.6$
• B. $10.2$
• C. $19.0$
• D. $21.6$

Answer 1

Answer: (C)

$19.0$

$\Rightarrow$ We know that the air pressure at the death zone threshold is approximately $35\%$ of sea level air pressure.

$\Rightarrow$ Sea lever air pressure $=29.2$

$\Rightarrow$ $35\%$ of $29.2=\frac{35}{100}\times 29.2=\mathrm{10.2.}$

$\Rightarrow$ The approximate difference between the pressure at sea level and the pressure at the death zone threshold $=29.2-10.2=19.0$