The amount of a sample remaining after t days is given by the equation cap p times t is equal to cap A times 1 half raised to the t over h power , where cap A is the initial amount of the sample and h is the half-life, in days, of the substance. A sample contains 60 percent of its original amount of Fermium- 257 The half-life of Fermium- 257 is about 100 days. About how old is the sample?