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A deep-sea diver explores fish at an elevation of -20.5 feet. Then the diver descends 60.5 feet the elevation of the top of the coral reef. What is the elevation of the top of the Coral reef?

User Mrinal Roy
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2 Answers

4 votes

If he descends 60.5 feet from the top of the reef, then the elevation to the top of the reef is 60.5 feet

User Marc Talbot
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6 votes

This problem can be solved simply by subtracting 60.5 from -20.5 because the diver started at -20.5 ft and then descended another 60.5 ft. Since, we are subtracting a number from a negative number, that means that the answer will too be negative.

-20.5-60.5=-81


The elevation of the top of the coral reef is -81 ft.


Hope this helps!

User ColdFire
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8.3k points
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