Brigham Young University (often referred to as BYU or, colloquially, The Y) is a private research university located in Provo, Utah, United States. It is owned and operated by The Church of Jesus Christ of Latter-day Saints (LDS Church), and, excluding online students, is the largest of any religious university and the third largest private university in the United States, with 29,672 on-campus students. Approximately 99 percent of the students are members of the LDS Church, and one-third of its US students are from Utah.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What percentage of BYU students are from Utah?
Ah, so.. one-third

Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth's crust, or about 5 million years' worth at the current rate of extraction). However, only a tiny fraction of these reserves is economically viable, given present-day prices and technologies. Various estimates of existing copper reserves available for mining vary from 25 years to 60 years, depending on core assumptions such as the growth rate. Recycling is a major source of copper in the modern world. Because of these and other factors, the future of copper production and supply is the subject of much debate, including the concept of peak copper, analogous to peak oil.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How long has copper been forbidden?
Ah, so.. unanswerable

The Roman Catholic Diocese of Charleston Office of Education also operates out of the city and oversees several K-8 parochial schools, such as Blessed Sacrament School, Christ Our King School, Charleston Catholic School, Nativity School, and Divine Redeemer School, all of which are "feeder" schools into Bishop England High School, a diocesan high school within the city. Bishop England, Porter-Gaud School, and Ashley Hall are the city's oldest and most prominent private schools, and are a significant part of Charleston history, dating back some 150 years.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Some of the oldest public schools in Charleston date back how long?
Ah, so..
unanswerable