Question
27 students in a class sold an average of 20 coins for charity. There were 9 more girls than boys in the class. The average number of coins sold by the girls was 13. Find the average number of coins sold by the boys.
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27 students in a class sold an average of 20 coins for charity. There were 9 more girls than boys in the class. The average number of coins sold by the girls was 13. Find the average number of coins sold by the boys.