Question

If the thickness of a pile of 12 cardboards is 65 mm, find the thickness of a pile of 312 such cardboards.

Answer 1

Let required thickness = x mm

No. of cardboards : Tickness :: No.of cardboard : Tickness

12 : 65 mm :: 312 : x

(more cardboard more thickness)

$\therefore x=\frac{65\times 312}{12}=65\times 26mm$

= 1690 mm = 169 cm = 1.69 m