Question

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. Answer the following:

1.) At what rate was the amount of oil in the well decreasing when there were 1,800,000 barrels remaining?
2.) When will there be 150,000 barrels remaining?

Answer 1

Based in your question where as the oil is pumped continuously from the well at a rate proportional to the amount of the oil left in the well. so the answer of the following questions are:
A.1 is to 200,000
B.5 years