[tex]\begin{gathered} \text{Sara estimates}\Rightarrow75\text{ \%} \\ \text{She reads }\Rightarrow216\text{ pages} \\ \text{The total number of page in the book is as follows:} \\ x\times75\text{ \%=216} \\ \text{Here, x is the number of tatal pages in the book} \\ so, \\ x\times\frac{75}{100}=216 \\ x=288\text{ pages} \end{gathered}[/tex]
