Question

If the rate of depletion of a certain resource is know to be 4% per year with an estimated known quantity today to be 720 tons, how many tons will be left in 25 years? (Round to the nearest tenth of a ton.)

Answer 1

259.5

Answer 2

Remaining=(initial quantity)*(percent remaining after 1 year)^(number of years)

so: 720*(.96^25)=259.5