Find the half-life (in hours) of a radioactive substance that is reduced by 15 percent in 60 hours

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- Sep 9th 2008, 05:21 PMcwarzechahalf life
Find the half-life (in hours) of a radioactive substance that is reduced by 15 percent in 60 hours

- Sep 9th 2008, 05:30 PMtopsquark