Question

Для ремонта школы прибыла бригада ,в которой было 2.5 раза больше маляров ,чем плотников .Вскоре прораб включил в бригаду ещё 4 моляра,а 2-ух плотников перевёл на другой объект.В результате маляров в бригаде оказалось в 4 раза больше,чем плотников.Сколько маляров и сколько плотников было в бригаде первоначально?

Answer 1

По моим подсчётам 8 плотников и 20 моляров)
4(х-2)=2,5х+4 
4х-8=2,5х+4 
1,5х=12 это уравнение.

Answer 2

Problem Analysis

We are given that a team arrived to repair a school, and initially, there were 2.5 times more painters than carpenters. Later, the foreman added 4 more painters to the team and transferred 2 carpenters to another project. As a result, there were 4 times more painters than carpenters in the team. We need to determine the initial number of painters and carpenters in the team.

Solution

Let's assume that the initial number of carpenters in the team is x. Since there were 2.5 times more painters than carpenters, the initial number of painters can be expressed as 2.5x.

After adding 4 more painters to the team, the total number of painters becomes 2.5x + 4. And after transferring 2 carpenters to another project, the total number of carpenters becomes x - 2.

According to the given information, the number of painters in the team is 4 times more than the number of carpenters. So we can write the equation:

**2.5x +