A mixture consists of flaxseed and cornmeal in the ratio 1 to 4, respectively. How many cups of flaxseed are used to make the mixture? (1) There are a total of 15 cups in the mixture. (2) The ratio of the number of cups of flaxseed to the total number of cups in the mixture is 1 to 5.

Data Sufficiency questions are exclusive to the GMAT.

Each Data Sufficiency question poses a question, followed by two statements. Your task is to evaluate the statements to determine at what point there is or is not sufficient information to answer the question.

Unlike the Problem Solving questions, you do not actually have to answer the question posed. Instead, you select one of five fixed answer choices that offer different options about the sufficiency of the information provided in the two statements.