Mathematics, 12.02.2021 14:00 AdoNice
A coal mine cage starts its descent from a platform 3 m above ground level to the lowest gallery,
which is 417 m below the platform. It then rises 80 m to a second gallery. What is the depth of
the second gallery below ground level?​
Answers: 3
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A coal mine cage starts its descent from a platform 3 m above ground level to the lowest gallery,
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