SaltyLightning2020 SaltyLightning2020

14-11-2020
Mathematics

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a submarine starts 800m below the surface of the ocean. It rises at a rate of 40m / min for 15 minutes. How much more does the submarine need to rise to reach 50m below the surface?

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14-11-2020

Correct me if I’m wrong. But the answer should be 18.75 minutes

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