Question

A diver is $20\mathrm{m}$ below sea level. If he goes further down by $10\mathrm{m}$, then find his new position.

• A. $10\mathrm{m}$
• B. $-10\mathrm{m}$
• C. $30\mathrm{m}$
• D. $-30\mathrm{m}$

Answer 1

The correct option is D

$-30\mathrm{m}$

Given,

Sea Level $=0\mathrm{m}$

Original Position$=-20\mathrm{m}$ (Since he is below sea level)

New Position$=-20+(-10)=-20-10=-30\mathrm{m}$

Hence, the correct option is D