Question

The thickness of a book containing 100 pages is 2 cm 5 mm. The thickness of one page will be
(a) 0.25 mm.
(b) 0.25 cm.
(c) 25 mm.
(d) 2.5 mm.

Answer 1

(a) 0.25 mm

$\because$ 1 cm = 10 mm
$\therefore$ 2 cm 5 mm = 2 × 10 mm + 5 mm
= 25 mm
Now, thickness of 100 pages = 25 mm
$\therefore$ Thickness of 1 page = 25 ÷ 100 mm
= 0.25 mm