the thickness of the total numbered pages of a textbook is measured 3.75cm. If nthe last page of the book is 860 what is the average thickess of a page.

What equation would I use to calculate this.

Thanks:(

I suppose it's safe to assume the pages are printed on front and back. So, there are 860/2=430 pages themselves.

3.75/430=.00872 cm

Which is about .0872 mm.

In inches that is .003 inches. Which seems reasonable.