Question

Средний возраст молодёжной бригады 23,5 года,причём возраст бригадира 37,5 года.Средний возраст бригады без учета возраста бригадира22,5 года .Сколько человек в молодёжной бригаде?

Answer 1

-2х-5х=-19-16 -7х=-35 
х=-35:(-7)
 х=5

Answer 2

Calculating the Number of People in the Youth Brigade

To calculate the number of people in the youth brigade, we can use the given information about the average age of the brigade and the age of the brigade leader.

The average age of the youth brigade is 23.5 years, and the age of the brigade leader is 37.5 years. The average age of the brigade without considering the age of the leader is 22.5 years.

Let's denote: - A as the average age of the youth brigade - L as the age of the brigade leader - A' as the average age of the brigade without considering the age of the leader

We can use the following formula to calculate the number of people in the youth brigade: A = (A' * n + L) / (n + 1), where n is the number of people in the brigade.

Solving for n: n = (L - A') / (A - A')

Substituting the given values: n = (37.5 - 22.5) / (23.5 - 22.5)

Let's calculate the value of n.