Question

An element with mass 1000 grams decays by 14.8% per minute. How much of the element is remaining after 11 minutes, to the nearest 10th of a gram?

Answer 1

$100\%-14.8\%=85.2\%=0.852\\\\1000g\ \times\ 0.852^{11}\approx171.7g\leftarrow answer$