Question

Помогите !!!! рабочий за 8 часов сделал 64 детали. за какое время он сделает 80 деталей, если будет делать на 2 детали больше?

Answer 1

1)64:8=8(дет./час)-рабочий делает за час.
2)8+2=10(дет./час)-рабочий будет делать
3)80:10=8(часов)-рабочий сделает 80 дет.

Answer 2

Сначала найдем произ водительность - 64/8=8д/ч
прибавляем 2 =10д/ч
80/10=8ч
Ответ: за 8 часов

Answer 3

Problem Analysis

We are given that a worker can make 64 parts in 8 hours. We need to find out how long it will take for the worker to make 80 parts if they make 2 more parts per hour.

Solution

To solve this problem, we can use the concept of proportions. Let's assume that the worker can make x parts in y hours. We can set up the following proportion:

64 parts / 8 hours = (64 + 2) parts / t hours

To find t, we can cross-multiply and solve for t:

64 * t = (64 + 2) * 8

Now we can solve for t:

t = (66 * 8) / 64

Let's calculate the value of t:

Calculation

t = (66 * 8) / 64 = 528 / 64 = 8.25

Answer

Therefore, it will take the worker 8.25 hours to make 80 parts if they make 2 more parts per hour.

Note: The answer is rounded to two decimal places.