1. "Here's the bill for polishing the floor," said Sam. "Only sixty pence a square metre, but your guess for the area was seventeen square metres out." Clare looked. "10 pounds and 20 pence more than I expected," she commented. "I thought it was five metres longer than it was wide." "I know you did," Sam told her. "But in fact it's two metres wider, and one metre shorter, than you said." What were the dimensions?

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