A submarine is diving at a depth of 500 meters. Every 3 minutes, it descends another 50 meters. It then reaches a depth of 1,000 meters.
How long did it take for the submarine to reach the depth of 1,000 meters?
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2 points
5 minutes
10 minutes
20 minutes
30 minutes
40 minutes
To find out the time it took for the submarine to reach a depth of 1,000 meters, we need to divide the total distance it traveled (500 meters) by the distance it covered every 3 minutes (50 meters).
500 meters / 50 meters = 10
Therefore, it took the submarine 10 cycles of descending 50 meters every 3 minutes to reach a depth of 1,000 meters.
Since each cycle takes 3 minutes,
10 cycles * 3 minutes/cycle = 30 minutes.
Therefore, the submarine took 30 minutes to reach a depth of 1,000 meters.
To determine how long it took for the submarine to reach the depth of 1,000 meters, we need to calculate the number of descents it made.
At each descent, the submarine goes down by 50 meters. Since the submarine started at a depth of 500 meters and reached a depth of 1,000 meters, it made a total of (1,000 - 500) / 50 = 10 descents.
Given that the submarine descends every 3 minutes, the total time it took would be 10 descents * 3 minutes per descent = 30 minutes.
Therefore, the correct answer is 30 minutes.
To find out how long it took for the submarine to reach the depth of 1,000 meters, we need to divide the total depth by the rate at which the submarine is descending.
The submarine descends 50 meters every 3 minutes, so the rate of descent is 50 meters / 3 minutes = 16.67 meters per minute.
Now, let's calculate how long it will take to reach a depth of 1,000 meters:
1,000 meters / 16.67 meters per minute ≈ 60 minutes.
Therefore, it took approximately 60 minutes for the submarine to reach a depth of 1,000 meters.
Since none of the given options match 60 minutes, it seems like there might be an error in the question or provided answer choices.