If the thickness of a pile of twelve cardboard sheet is 45mm than how many sheets of the same cardboard would be 90cm thick
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90 cm is equals to 900 mm
sheets 45 mm thick= 12
sheets 1 mm thick=12/45
sheets 900mm thick=12/45*900=240sheets
sheets 45 mm thick= 12
sheets 1 mm thick=12/45
sheets 900mm thick=12/45*900=240sheets
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