Question

5. Трактористам надо было вспахать поле площадью 320 га. В первый день они вспахали 3/8 всего поля, во второй день 55% оставшейся площади, остальную часть поля они вспахали за третий день. Какую площадь вспахали трактористы за третий день? учитель сказал уже первое действие это 320×3/8=70дальше 320-70=250-оставшейся площадь:_) А дальше я хз что​

Answer 1

Пошаговое объяснение:

5

1) 320×3/8=120 га вспахали в 1 день

2) 320-120=200 га осталось вспахать

55%=0,55

3) 200×0,55=110 га вспахали во 2 день

4) 320-(120+110)=90 га вспахали за 3 день

Answer 2

Problem Analysis

We are given that a group of tractor drivers needs to plow a field with an area of 320 hectares. They plowed 3/8 of the field on the first day and 55% of the remaining area on the second day. We need to determine the area that the tractor drivers plowed on the third day.

Solution

To solve this problem, we can break it down into three steps: 1. Calculate the area plowed on the first day. 2. Calculate the remaining area after the first day. 3. Calculate the area plowed on the third day.

Let's calculate each step one by one.

Step 1: Calculate the area plowed on the first day

The tractor drivers plowed 3/8 of the total field area on the first day. To find the area plowed on the first day, we can multiply the total area by 3/8.

Area plowed on the first day = Total area × 3/8

Substituting the given values: Area plowed on the first day = 320 hectares × 3/8

Calculating the result: Area plowed on the first day = 120 hectares

Step 2: Calculate the remaining area after the first day

To find the remaining area after the first day, we need to subtract the area plowed on the first day from the total area.

Remaining area after the first day = Total area - Area plowed on the first day

Substituting the given values: Remaining area after the first day = 320 hectares - 120 hectares

Calculating the result: Remaining area after the first day = 200 hectares

Step 3: Calculate the area plowed on the third day

The tractor drivers plowed 55% of the remaining area on the second day. To find the area plowed on the third day, we can multiply the remaining area by 55%.

Area plowed on the third day = Remaining area after the first day × 55%

Substituting the given values: Area plowed on the third day = 200 hectares × 55%

Calculating the result: Area plowed on the third day = 110 hectares

Answer

Therefore, the tractor drivers plowed an area of 110 hectares on the third day.

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