The new length of the wood is 12 3/8
The first step is to write out the parameters given in the question
A piece of wood is 15 1/4
2 7/8 is cut off from the wood
The new length of the wood can be calculated as follows
15 1/4 - 2 7/8
61/4 - 23/8
= 99/8
Change to mixed fraction
= 12 3/8
Hence the new length of the wood is 12 3/8
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