Question

В первой бригаде было в 4 раза меньше людей,чем во второй.После того как из второй бригады 6 человек ушло,а 12 перевели в первую,людей в бригадах стало поровну. Сколько человек было в первой бригаде ?

Answer 1

В первой бригаде было x людей.
Во второй бригаде было y людей.

{4x=y
{y-6-12 = x+12 <=> у=x+30

{4x=y
{4x=x+30 <=> 3x=30 <=> x=10

Answer 2

Calculating the Number of People in the First Brigade

Given: - The first brigade had 4 times fewer people than the second brigade. - 6 people left the second brigade, and 12 were transferred to the first brigade, resulting in an equal number of people in both brigades.

Let's denote the initial number of people in the second brigade as x. Then, the initial number of people in the first brigade would be x/4.

After 6 people left the second brigade and 12 were transferred to the first brigade, the number of people in both brigades became equal.

Calculations:

1. Initial number of people in the second brigade: x 2. Initial number of people in the first brigade: x/4 3. After 6 people left the second brigade: x - 6 4. After 12 people were transferred to the first brigade: (x/4) + 12

According to the given condition, the number of people in both brigades became equal after the transfers: (x - 6) = (x/4) + 12

Solving for x: (x - 6) - (x/4) = 12 (4x - 24) - x = 48 3x = 72 x = 24

So, the initial number of people in the second brigade (x) was 24.

Final Answer:

The initial number of people in the first brigade was 24/4 = 6. Therefore, there were 6 people in the first brigade initially.