Question
Brandon had some rice flour. He used the same amount of rice flour each day. By the end of Day 5, he had 580 g of rice flour left. At the end of Day 6, he had 540 g of rice flour left. How much rice flour did Brandon have at first?
4 m

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Brandon had some rice flour. He used the same amount of rice flour each day. By the end of Day 5, he had 580 g of rice flour left. At the end of Day 6, he had 540 g of rice flour left. How much rice flour did Brandon have at first?