Data Sufficiency for FDPs

Things one must know:

• Rephrase questions and statements into equations in order to keep track of what you know and what you need to know. Your ultimate goal in writing equations is to combine them in such a way that you are left with a single equation with only one variable. The variable in the equation should represent the quantity you are asked to find in the original question
• Beware of statements that introduce too many variables, these are usually not sufficient to answer the qeuestion.