Question
Sean has $9 in his savings box and Lui has $2 in his. Sean adds $1 to his savings box each day and Lui adds $4 to his each day. On which day will Lui’s savings be twice of Sean’s?
4 m

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Sean has $9 in his savings box and Lui has $2 in his. Sean adds $1 to his savings box each day and Lui adds $4 to his each day. On which day will Lui’s savings be twice of Sean’s?