AVG_AGE

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Chef and Nayan are good friends, Chef is very strong in mathematics. Nayan is facing a problem in a question. So, Nayan decided to take the chef's help. Nayan asks the chef that -> The average age of class of $N$ number of students and a class teacher reduces by $x$ years, if we exclude the Teacher. If the Initial average age of the class is $Y$ years. Then Find the age of the Class Teacher. ###

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solution.cppC++17

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