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Monetary Difference

Stage: 3 Short Challenge Level: Challenge Level:2 Challenge Level:2
Al and Bertie have £55 between then, so Chris and Di have £150-£55=£95 between then. As Al and Chris have £65 between them, the difference between the amounts Al and Di have is £95-£65, so £30.

This problem is taken from the UKMT Mathematical Challenges.
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