Question

Здравствуйте, помогите решить задачу! "В археологических раскопках древнего города участвовали 2 экспедиции. В первой было в 3 раза сотрудников, чем во второй. Когда во вторую экспедицию прибыли ещё 18 человек то в 2-х экспедициях вместе стало 66 сотрудников. Сколько стало сотрудников во второй экспедиции?"

Answer 1

1)Х+18+3х=18 4х+18=66 4х=66-18 4х=48 Х=48:4 Х=12 2) 12+18=30

Answer 2

Problem Analysis

We are given information about two archaeological expeditions in an ancient city. The first expedition had three times as many employees as the second expedition. When 18 more people joined the second expedition, the total number of employees in both expeditions became 66. We need to determine the number of employees in the second expedition.

Solution

Let's assume the number of employees in the second expedition is x. According to the problem, the first expedition had three times as many employees as the second expedition, so the number of employees in the first expedition is 3x.

When 18 more people joined the second expedition, the total number of employees in both expeditions became 66. We can set up the following equation to represent this information:

x + (3x + 18) = 66

Simplifying the equation:

4x + 18 = 66

Subtracting 18 from both sides:

4x = 48

Dividing both sides by 4:

x = 12

Therefore, the number of employees in the second expedition is 12.

Answer

The number of employees in the second expedition is 12.