Question

If the thick board of a pile of 12 card board sheets in 45 mm then how many sheets of the same cardboard would be 90 cm thick?​

Answer 1

Number of cardboard sheets in one thick pile = 12

Thickness of pile = 45mm = 4.5cm

Thickness of required pile = 90cm

Let number of sheets required for making the required pile be x

$= > \frac{90}{x} = \frac{4.5}{12}$

$= > x = \frac{90 \times 12}{4.5}$

$= > x = 240$

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