In 2005, the world reserves of bauxite were about 23 billion metric tons. (Source: Based on data from U.S. Geological Survey summaries, Jan. 2005.) Assuming that the growth described in Exercise 24 continues and that no new reserves are discovered, when will the world reserves of bauxite be depleted?

Reference Problem 24
The demand for aluminum ore (bauxite). In 2005 (t = 0), bauxite production was approximately 153 million metric tons, and the demand was growing exponentially at a rate of 2.5% per year. (Source: Based on data from U.S. Energy Information Administration.) If the demand continues to grow at this rate, how many tons of bauxite will the world use from 2005 to 2030?

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