Mathematics · Average
The average age of 35 students in a class was 20 years. 5 new students each of age 25 years joined the class and 5 other students left the class. Now the average age of the class is 21 years. If the average age of 3 particular students among the 5 students who left is 15 years, then the sum of the ages of the remaining two students who left is:
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