Arithmetic Reasoning

Today I present a question on percentage. 25 is 50% of what number?

Percentages are an important topic to study to prepare for the ASVAB.  As an ASVAB tutor, I teach my students a variety of questions about percentages.  Percentages is one of the 15 subtopics that I review in my Arithmetic Reasoning review of the ASVAB.  This problem can be solved as a proportion.  Do you know how to solve this problem?  I will present the answer and the explanation tomorrow.