The thickness of 25 pages of a physics textbook is 2 mm. How would you find the thickness, in mm, of 1 page?

To solve this question, all you have to do is set up a proportion with the information known and the information unknown and solve for the final variable, after setting them equal to each other.

2 mm/25 = ?/1

2/25 = 8/100 = 0.08 mm

1 page of the textbook would be 8 hundredths of a mm.