Question

ПОМОГИТЕ ПО МАТЕМАТИКЕ Один комбайн может убрать всю пшеницу за 12 дней, другой за 6 дней. За сколько дней оба комбайна вместе уберут пшеницу с поля?Ну 9 же а она (училка) говорит не правильно

Answer 1

Ответ:

Пошаговое объяснение:

(12+6) \ 2 = 18 \ 2 = 9 дней

Ответ: оба комбайна уберут поле за 9 дней.

учитель ошибся наверное

Answer 2

Ответ:

за 9 дней. Элементарно!

Answer 3

Solution to Harvesting Problem

To solve this problem, we can use the concept of work done. The work done by the first combine in 1 day is 1/12 of the field, and the work done by the second combine in 1 day is 1/6 of the field. When they work together, their combined work rate is the sum of their individual work rates.

Calculating Combined Work Rate

The combined work rate of both combines working together is:

Combined Work Rate = Work Rate of First Combine + Work Rate of Second Combine

Let's calculate the combined work rate:

Combined Work Rate = 1/12 + 1/6

Combined Work Rate = 1/12 + 2/12

Combined Work Rate = 3/12

Combined Work Rate = 1/4

So, when both combines work together, they can harvest 1/4 of the field in 1 day.

Calculating Time to Harvest the Entire Field

To find out how many days it will take for both combines to harvest the entire field, we can use the formula:

Time = Total Work / Combined Work Rate

In this case, the total work is the entire field, which is represented by 1.

Time = 1 / (1/4)

Time = 4

So, when both combines work together, they can harvest the entire field in 4 days.

I hope this explanation helps! If you have any further questions or need additional assistance, feel free to ask!