Question

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

Answer 1

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

Answer 2

step by step is also in answer..

hope it helps mark as brainlist..