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How many enve...

Question

How many envelopes can be made out of a sheet of paper $324 c m$ by $172 c m$ , if each envelope requires a piece of paper of size $18 c m$ by $12 c m$ ?

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Solution

Length of the sheet of paper=324cm
Breadth of sheet of paper=172cm
Area of sheet paper=length x breadth=324 x 172 cm²
Area of the piece of paper required for on envelope=18 x 12 cm²
Number of envelopes=324×172/18×12
=258

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