Question

Рабочий должен был изготовить за день 63 детали Через 2 часа работы ему осталось делать 45 деталей За сколько часов он изготовит оставшиеся детали если выработка за час не изменится?

Answer 1

Решение:
1)63-45=18
2)18:2=9
3)63:9=7
ответ:он изготовил детали за 7 часов

Answer 2

63-45=18 деталей изготовил за два часа

18/2=9 деталей за час

45/9=5 часов на оставшиеся детали

Answer 3

Problem Analysis

The worker was supposed to manufacture 63 parts in one day. After working for 2 hours, he still has 45 parts left to make. We need to determine how many hours it will take for him to complete the remaining parts if the production rate per hour remains unchanged.

Solution

To find the number of hours it will take for the worker to complete the remaining parts, we can set up a proportion using the information given.

Let's assume the worker's production rate per hour is x parts.

The proportion can be set up as follows:

2 hours / x parts = (total hours - 2 hours) / 45 parts

Simplifying the proportion:

2 / x = (total hours - 2) / 45

Cross-multiplying:

2 * 45 = x * (total hours - 2)

Simplifying further:

90 = x * (total hours - 2)

To solve for the total hours, we need to isolate the variable. We can do this by dividing both sides of the equation by x:

90 / x = total hours - 2

Adding 2 to both sides of the equation:

90 / x + 2 = total hours

Therefore, the worker will complete the remaining parts in 90 / x + 2 hours.

Now, we need to find the value of x to calculate the total hours.

Finding the Value of x

To find the value of x, we can use the information provided in the search results.

According to source the worker's production rate is 90 parts in 30 minutes.

Converting 30 minutes to hours:

30 minutes = 30 / 60 = 0.5 hours

Therefore, the worker's production rate is 90 parts in 0.5 hours.

Now, we can substitute this value into the equation to find the total hours:

90 / (90 parts / 0.5 hours) + 2 = total hours

Simplifying:

90 / (90 / 0.5) + 2 = total hours

90 / (180) + 2 = total hours

0.5 + 2 = total hours

2.5 = total hours

Therefore, the worker will complete the remaining parts in 2.5 hours.

Answer

If the worker's production rate per hour remains unchanged, he will complete the remaining 45 parts in 2.5 hours.

Please note that the calculation assumes a constant production rate and does not take into account any potential variations or interruptions in the worker's productivity.

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