Question
The average age of a group of plumbers and electricians is 30. If the average age of the plumbers is 28 years and that of the electricians is 38 years, what is the ratio of the number of plumbers to electricians?
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The average age of a group of plumbers and electricians is 30. If the average age of the plumbers is 28 years and that of the electricians is 38 years, what is the ratio of the number of plumbers to electricians?