If the half-life of a material is 45 years, how much will be left after 100 years?
A) less than a quarter.
B) more than a quarter.
C) less than half.
D) more than half.
E) More information is needed to work out the answer.

Question

Quizplus · Accepted Answer

After one half-life (45 years), half of the material remains. After two half-lives (90 years), a quarter remains. After 100 years, which is more than two half-lives, less than a quarter of the material will remain.

If the Half-Life of a Material Is 45 Years, How