Question
27 children in a class sold an average of 17 postcards for charity. There were 9 more boys than girls in the class. The average number of postcards sold by the boys was 13. Find the average number of postcards sold by the girls.
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27 children in a class sold an average of 17 postcards for charity. There were 9 more boys than girls in the class. The average number of postcards sold by the boys was 13. Find the average number of postcards sold by the girls.