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Mathematics, 21.12.2019 03:31 yeld

Oil is pumped continuously from a well at a rate proportional to the amount of oil left in the well. initially there were 3 million barrels of oil in the well; six years later 1,500,000 barrels remain.

(a) at what rate was the amount of oil in the well decreasing when there were 1,800,000 barrels remaining?

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