In order to find how far was drilled into the joist subtract the thickness of the wood from the total drilled and follow those steps
Step 1
Convert mixed number to an improper fraction
[tex]1\frac{1}{3}\ in= \frac{1*3+1}{3}= \frac{4}{3}\ in[/tex]
Step 2
Subtract the thickness of the wood from the total drilled
[tex]3-\frac{4}{3}= \frac{9}{3}- \frac{4}{3}= \frac{5}{3}\ in[/tex]
Step 3
Convert improper fraction to a mixed number
[tex]\frac{5}{3}\ in=\frac{3}{3}+\frac{2}{3}=1+\frac{2}{3}=1\frac{2}{3}\ in[/tex]
therefore
the answer is
[tex]1\frac{2}{3}\ in[/tex]
