E.Tarte--Math Puzzle--Books on shelf (prize if you want)

[lazimofo90]

I believe to have got the answer to the problem , Edward , however please correct my answer if I am wrong.I was a honor algebra student in high school but my brain is dull at the moment due to lack of intellectual activity.

[x246869]

You can tell the good puzzles, because you remember them decades after being fooled the 1'st time around. I hope not to be fooled twice, even if I have to drill at an angle and come out diagonally at 12.727 inches on vol 10 from where I started in vol 1. That would make my wrong answer right I think.

[Akulanization]

Is the book cover 1/8th" counting both the front and back cover?

[edwardtarte]

@Akulanization, no. Each front cover is 1/8 of an inch thick, and each back cover is 1/8 of an inch thick.