Question
Riordan has $10 in his savings box and Howard has $2 in his. Riordan adds $1 to his savings box each day and Howard adds $4 to his each day. On which day will Howard’s savings be twice of Riordan’s?
4 m

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Riordan has $10 in his savings box and Howard has $2 in his. Riordan adds $1 to his savings box each day and Howard adds $4 to his each day. On which day will Howard’s savings be twice of Riordan’s?