ANSWER
7/12
EXPLANATION
We have that Paula first read 1/12 of her book. Then she read, 1/3 of the book.
First, we have to find how much of the book she has read.
We do that by adding the amounts she has read.
That is:
[tex]\begin{gathered} \frac{1}{12}+\frac{1}{3} \\ \frac{1+(4\cdot1)}{12}=\frac{1+4}{12} \\ =\frac{5}{12} \end{gathered}[/tex]
Now, to find how much she still has to read, we have to subtract the fraction she has read from 1.
That is:
[tex]\begin{gathered} 1-\frac{5}{12} \\ \Rightarrow\text{ }\frac{12}{12}-\frac{5}{12} \\ =\frac{7}{12} \end{gathered}[/tex]
Therefore, she still has to read 7/12 of the book.
