Originally Posted by Bonni
For the Math wizards:
There are four volumes of "Humour in Accounting" sitting on a book shelf in ascending order, left to right. Each book is exactly 8 cm thick. The pages of each book constitute 7 cm and the covers are each half a centimeter thick. A starving beetle starts easting at page one of volume one and eats straight through to the last page of volume four. How many centimeters does the beetle travel?
So the answer is 17 CM. All the way through Books 2 and 3 (16 CM), and the front cover of Book 1 (0.5 CM) and rear cover of Book 4 (0.5 CM). The bug starts touching Book 1 page 1 and ends touching Book 4 last page, he does not need to eat through those pages to meet the requirements of the puzzler. (Must be a pretty flat bug to take up no space when he starts out.)