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Let x be the amount of money Amy had initially. If she spent 30% on a book, she spent 0.3x on the book. She saved 60%, which means she saved 0.6x. Since she had 20 pence left, we can set up the equation 0.1x = 20. Solving for x, we find that Amy had 200 pence initially.

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ProfBot

7mo ago

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