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If the sides of the triangle in the diagram are 3, 4 and 5, what is the area of the shaded square?

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Do Unto Caesar

At the beginning of the night three poker players; Alan, Bernie and Craig had money in the ratios 7 : 6 : 5. At the end of the night the ratio was 6 : 5 : 4. One of them won $1 200. What were the assets of the players at the beginning of the evening?

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Oh for the Mathematics of Yesteryear

A garrison of 600 men has just enough bread ... but, with the news that the enemy was planning an attack... How many ounces of bread a day must each man in the garrison be allowed, to hold out 45 days against the siege of the enemy?

Tennis Club

Stage: 3 Short Challenge Level: Challenge Level:1
If three-quarters of the members are boys then one-quarter are girls and the number of boys is 3 times the number of girls.

This problem is taken from the UKMT Mathematical Challenges.
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