The table shows the heights in feet of some mountains and the depths in feet (as negative number) of some ocean trenches.

$\begin{array}{cc|cc}
\hline \text {Mountain} &\text { Height} & \text {Trench} &\text { Depth }\
\hline \text {A }& 16,200 & \mathrm{P}& -31,927\
\mathrm{~B} & 16,743 & \mathrm{Q} & -25,749 \
\mathrm{C} & 15,438 & \mathrm{R} & -22,389 \
\hline
\end{array}$

How much deeper is the trench $\mathrm{Q}$ than the trench $\mathrm{R}$ ?
A) $3360 \mathrm{ft}$
B) $48,138 \mathrm{ft}$
C) $-48,138 \mathrm{ft}$
D) $-3360 \mathrm{ft}$

Question

The table shows the heights in feet of some mountains and the depths in feet (as negative number) of some ocean trenches.

$\begin{array}{cc|cc}
\hline \text {Mountain} &\text { Height} & \text {Trench} &\text { Depth }\
\hline \text {A }& 16,200 & \mathrm{P}& -31,927\
\mathrm{~B}  & 16,743 & \mathrm{Q} & -25,749  \
 \mathrm{C}  & 15,438 & \mathrm{R} & -22,389  \
\hline
\end{array}$

How much deeper is the trench $\mathrm{Q}$ than the trench $\mathrm{R}$ ?
A) $3360 \mathrm{ft}$
B) $48,138 \mathrm{ft}$
C) $-48,138 \mathrm{ft}$
D) $-3360 \mathrm{ft}$

Quizplus · Accepted Answer

To find how much deeper trench Q is than trench R, subtract the depth of R from the depth of Q: $-25,749 - (-22,389) = -25,749 + 22,389 = -3,360$. Since depth is measured as a negative number, a more negative number means deeper. Therefore, Q is 3,360 ft deeper than R.

The Table Shows the Heights in Feet of Some Mountains