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'Weekly Problem 46 - 2008' printed from

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The graph shows how the weight of a letter (including the envelope) varies with the number of sheets of paper used.

graph of weight of letter against number of sheets of paper
What is the weight of a single sheet of paper?


If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

This problem is taken from the UKMT Mathematical Challenges.

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