Question

Рабочий должен был изготовить за день 63 детали. Через 2 ч работы ему осталось сделать 45 деталий. За сколька часов он изготовить оставшись детали,если выработка за час не изменяется? Скраткой запьюся

Answer 1

Всего = 63 детали
Время отработал = 2 часа
Осталось = 45 деталей
Время осталось = ?
Производительность = ?

1) 63 - 45 = 18 деталей сделал за 2 часа
2) 18 : 2 = 9 дет/час - производительность
3) 45 : 9 = 5 часов осталось изготовить 45 деталей

Answer 2

Problem Analysis

We are given that a worker was supposed to manufacture 63 parts in one day. After working for 2 hours, the worker still has 45 parts left to manufacture. We need to determine how many more hours the worker will need to complete the remaining parts, assuming the production rate per hour remains constant.

Solution

To solve this problem, we can use the concept of proportions. Since the worker's production rate per hour remains constant, we can set up the following proportion:

63 parts / 1 day = 45 parts / x hours

To find the value of x, we can cross-multiply and solve for x:

63 * x = 45 * 1

Simplifying the equation:

63x = 45

Dividing both sides by 63:

x = 45 / 63

Now we can calculate the value of x to determine how many more hours the worker will need to complete the remaining parts.

Calculation

Let's calculate the value of x:

x = 45 / 63

Using a calculator, we find that:

x ≈ 0.7143

Therefore, the worker will need approximately 0.7143 hours to complete the remaining parts.

Answer

If the worker's production rate per hour remains constant, the worker will need approximately 0.7143 hours to complete the remaining parts.

Please let me know if I can help you with anything else.