A rough estimate of the oil and gas reserves in some country at the beginning of 2010 was 15 billion tons. production that year was approximately 250 million tons.

when will the reserves be exhausted if production is kept at same level?

I have no clue on how to solve and tackle this problem, it seems kind of odd to me that there is nothing to indicate at which level the reserves are being consumed.

Really appreciate any hints on how to solve it.

  • 3
    $\begingroup$ Production possibly means that they produce barrels of oil out of the reserves. Then again, it may also mean that the country is putting dinosaurs and other organic compound under ground at a fast enough rate that 250 million tons of it is converted to fossils yearly. $\endgroup$
    – Giskard
    Commented Oct 30, 2019 at 15:25

1 Answer 1


If the country converts the reserves to 250 million per year, then in 4 years it will convert 1 billion and 15 billion will be exhausted in 15x4 years.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.