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.

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Solution

(a) 0.25 mm

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

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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.

(a) 0.25 mm ∵ 1 cm = 10 mm ∴ 2 cm 5 mm = 2 × 10 mm + 5 mm = 25 mm Now, thickness of 100 pages = 25 mm ∴ Thickness of 1 page = 25 ÷ 100 mm = 0.25 mm

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.

(a) 0.25 mm

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