Write the Sentence as a Proportion Using $x$ As the Variable, and Then Solve to Answer the Question

Short Answer

Write the sentence as a proportion using $x$ as the variable, and then solve to answer the question. 80% of what number is 80? Enter $x$ and integers. $\frac { ? } { ? } = \frac { ? } { 100 }$ Solve the proportion to answer the question. $$x =$$ __________