Mathematics · Averages
The average weight of a certain number of students in a class is 26 kg. If 5 students A, B, C, D, and E join the class, then the average weight of all the students increases by 1 kg. If the weight of A is 10 kg and the ratio of the weights of all five new students is 5 : 6 : 7 : 8 : 9, find the initial number of students in the class.
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