Question

Некоторую работу 15 рабочих выполняют за 12 дней.За сколько дней выполнят эту же работу 5 рабочих?

Answer 1

1) 15 : 5 = 3 (раза)
5 рабочих меньше, чем 15 в 3 раза. Значит им придётся работать в 3 раза дольше.
2) 12 х 3 = 36 (дней)

Это ответ! :)

Удачи!

Answer 2

15рабочих-12дней
5рабочих-х дней
х=5*12/2=60/2=30
ответ:30 дней

Answer 3

Calculation

To calculate the number of days it will take 5 workers to complete the same job, we can use the concept of work rate. The work rate is the amount of work done per unit of time. In this case, we know that 15 workers can complete the job in 12 days. Let's calculate the work rate of the 15 workers:

Work rate of 15 workers = 1 job / 12 days

Now, we can calculate the work rate of 5 workers. Since the amount of work remains the same, the work rate should also remain the same. Let's denote the number of days it will take for 5 workers to complete the job as "x":

Work rate of 5 workers = 1 job / x days

Since the work rate is the same, we can set up the following equation:

Work rate of 15 workers = Work rate of 5 workers

1 job / 12 days = 1 job / x days

To solve for "x", we can cross-multiply:

12 days * 1 job = x days * 1 job

12 = x

Therefore, it will take 12 days for 5 workers to complete the same job.