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A comment on Math Problems for children from 5 to 15 (2004) [pdf]. Parent comment

Re:Math Problems for children from 5 to 15 (2004) [pdf] by scratcheee on Monday July 19, 2021 @02:37PM (#27885879)
The bookworm could have moved right to left from volume 1 to volume 2. Assuming the spines are facing out, the books are right-way up, and volume 2 is on the left of volume 1, then the answer would be 44mm.
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