Question

Первый токарь за 1ч обтачивает 33 детали, а второй токарь за 3ч обтачивает столько делалей,сколько первый за 4ч.Успеют ли они обточить 140 делалей за 2ч и при совместной работе?

Answer 1

1) 33x4=132дет. - обтачивает 2ой токарь за 3 час.а.
2) 132:3=44дет. - обтачивает 2ой токарь за 1 час.
3) 33+ 44=77 дет. - обточат они за1 час.
4)77х2=154дет. - сделают за 2 часа.

Answer 2

Problem Analysis

We have two lathe workers, the first one can process 33 parts in 1 hour, and the second one can process the same number of parts as the first one in 4 hours. We need to determine if they can process 140 parts in 2 hours when working together.

Solution

To solve this problem, we need to calculate the individual rates of each worker and then determine if their combined rate is sufficient to process 140 parts in 2 hours.

Let's start by calculating the rate of the first worker. We know that the first worker can process 33 parts in 1 hour. Therefore, their rate is 33 parts per hour.

Next, let's calculate the rate of the second worker. We are given that the second worker can process the same number of parts as the first worker in 4 hours. This means that their rate is 33 parts per 4 hours, which can be simplified to 8.25 parts per hour.

Now, let's calculate the combined rate of both workers. The combined rate is the sum of their individual rates. Therefore, the combined rate is 33 + 8.25 = 41.25 parts per hour.

Finally, let's determine if they can process 140 parts in 2 hours when working together. We can calculate the total number of parts they can process in 2 hours by multiplying their combined rate by the number of hours. Therefore, the total number of parts they can process in 2 hours is 41.25 parts per hour * 2 hours = 82.5 parts.

Since the total number of parts they can process in 2 hours is less than 140 parts, they will not be able to complete the task in the given time.

Conclusion

The two lathe workers will not be able to process 140 parts in 2 hours when working together.