Question
The average age of a group of soldiers and plumbers is 30. If the average age of the soldiers is 28 years and that of the plumbers is 40 years, what is the ratio of the number of soldiers to plumbers?
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The average age of a group of soldiers and plumbers is 30. If the average age of the soldiers is 28 years and that of the plumbers is 40 years, what is the ratio of the number of soldiers to plumbers?