Question

Хор из 20 человек исполняет гимн села Пузырёво за 5 минут. За сколько минут этот гимн исполнит хор из 40 человек?

Answer 1

За 10 минут
40 человек споёт 

Answer 2

За 40 минут без разницы сколько людей поют гимн(текст) один и тот же

Answer 3

Calculation of Time

To calculate the time it takes for a choir of 40 people to perform the anthem of the village of Puzyrovo, given that a choir of 20 people can perform it in 5 minutes, we can use the concept of "work rate" or "efficiency."

The work rate is the amount of work done per unit of time. In this case, the work is the performance of the anthem, and the time is the duration of the performance.

Let's assume that the work rate of the choir is constant. This means that the amount of work done is directly proportional to the number of people in the choir and inversely proportional to the time taken.

Using this assumption, we can set up a proportion to find the time it takes for the choir of 40 people to perform the anthem:

20 people : 5 minutes = 40 people : x minutes

To solve for x (the time it takes for the choir of 40 people), we can cross-multiply and solve for x:

20 * x = 5 * 40

x = (5 * 40) / 20

x = 200 / 20

x = 10

Therefore, it will take the choir of 40 people 10 minutes to perform the anthem of the village of Puzyrovo.