Math Quiz: NYT Learning Network

Through Math for America, I am part of an on-going collaboration with the New York Times Learning Network.  My latest contribution, a Test Yourself quiz-question, can be found here:

https://learning.blogs.nytimes.com/2011/10/24/test-yourself-math-oct-24-2011/
This problem is based on a recent discovery of sunken treasure at the bottom of the sea and asks “How much is silver worth per pound?”