Question

A diver was driving $100$ metres below sea level. He went down $20$ metres more and came up $35$ metres. How far below sea level did he dive?

• A. $+85$ metres
• B. $-85$ metres
• C. $+55$ metres
• D. $-55$ metres

Answer 1

Answer: (B)

$-85$ metres

Clearly, he is at $-100-20+35=-85$, i.e $85$ metres below sea level.

Option B is right.