Mathematics
Grade-7
Easy
Question
A shark was swimming at 300 feet below sea level. It swam up to the surface of 300 feet. The shark is at ________ feet above the sea level.
- 0; It is at sea level now
- It did not swim anywhere
- 600
- -600
Hint:
When the shark swims below the sea level, we take it as negative and when it swims above we take it as positive.
The correct answer is: 0; It is at sea level now
Initially the shark was 300 feet below the sea level. That is -300 ft.
Here, we consider 0 feet as the sea level. So, when the shark swam to 300 feet above, we have -300+300=0 feet.
Thus means that the shark is currently at 0 feet, that is it is at the sea level.
Hence, the correct answer is option a.
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