Question
Andy has $7 in his savings box and Zane has $1 in his. Andy adds $1 to his savings box each day and Zane adds $5 to his each day. On which day will Zane’s savings be thrice of Andy’s?
4 m

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Andy has $7 in his savings box and Zane has $1 in his. Andy adds $1 to his savings box each day and Zane adds $5 to his each day. On which day will Zane’s savings be thrice of Andy’s?