A submarine is at a depth of 150 meters below sea level. It ascends 70 meters. What is its new position relative to sea level?
Options
A
80 meters below sea level
B
80 meters above sea level
C
220 meters below sea level
D
220 meters above sea level
Answer & Analysis
Answer
A
Analysis
Question Analysis
This question tests the application of integer operations in a real-world context, specifically the concept of ascending and descending in terms of depth.
Key Concept Explanation
The problem involves subtracting the ascent (positive integer) from the initial depth (negative integer). The result will be the new position relative to sea level.
Step-by-step Solution
1. Identify the initial depth: meters (below sea level).
2. Identify the ascent: meters (above sea level).
3. Apply the subtraction rule:
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