Question 1171156
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Group the people in sets, including 3 people of marketing and 11 people of sales to each group.


The number of people in each group will be 3 + 11 = 14,

and the number of groups is  210/14 = 15.


Hence, there are 3*15 = 45 persons in marketing and 11*15 = 165 people in sales.    <U>ANSWER</U>
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Solved.