Question

If the thickness of a pile of 12 cardboard sheets is 45 mm, then how many sheets of the
same cardboard would be 90 cm thick?
​

Answer 1

Answer:

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Step-by-step explanation:

good night

Answer 2

Answer:

Answer

It is given that,

Thickness of 12 cardboard = 45 mm

Let x be the number of cardboard whose thickness is 90 cm = 900 mm

So,

12:x=45:900

⇒

x

12

=

900

45

⇒x=

45

12×900

⇒x=240 mm

∴ Thickness of 90 cardboard is 240 mm.