Contractor Mr. Reiling has a top board that is 13/14 inch thick. Mr. Reiling wants to use the wood screws to attach it to a bottom board. If a wood screw is 3 1/2 inches long, how much of the screw will be left over to go into the bottom board?
The thickness of the top board is 13/14 inches.
The length of the wood screw is 3 1/2 inches or 7/2 inches
Assuming that the wood screw is nailed completely into the top board then the length of screw left to attach to a bottom board will the length of the screw minus the the thickness of the top board. That is,
Therefore the length of the wood screw left to attach a bottom board after nailing it into the top board is 18/7 inches.
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