If 7 boys and 2 men working together can do three times as much work per hour as a boy and a man together - what will be the respective ratio of work done by a boy and a man for the given time?

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If 7 boys and 2 men working together can do three times as much work per hour as a boy and a man together - what will be the respective ratio of work done by a boy and a man for the given time?