Question

Рабочий выполнил 3/8 работы за 9 часов Найдите За какое время рабочих выполнили 7/12 все работы Если Темп работы не изменится

Answer 1

Ответ:14 часов

Пошаговое объяснение:(7/12) * 9 / (3/8) = 14 часов.

Answer 2

To find out how much time the workers will take to complete 7/12 of the work, we can set up a proportion based on the work rates:

Let's denote the time it takes to complete 7/12 of the work as "t" (in hours). The work rate is the amount of work done per hour.

Given information:

1. Work rate for completing 3/8 of the work = 1 job / 9 hours
2. Work rate for completing 7/12 of the work = 1 job / t hours

Since the work rate remains the same, we can set up a proportion:

(Work rate for 3/8) / (Work rate for 7/12) = (Time taken for 3/8) / (Time taken for 7/12)

(3/8) / (7/12) = 9 / t

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

(3/8) * (12/7) = 9 / t

Now, perform the calculations:

(3/8) * (12/7) = 36 / 56 = 9 / t

Now, find "t" by cross-multiplying:

36t = 9 * 56

36t = 504

t = 504 / 36

t = 14

Therefore, it will take the workers 14 hours to complete 7/12 of the work if the work rate remains unchanged.