Question

Помогите очень надо))!!!За два дня было вспахано 240 га.Во второй день вспахали 7/9того,что было вспахано в первый день.Сколько гектаров земли было вспахано в каждый из этих дней?

Answer 1

х-вспахали в первый день

7/9х-вспахали во второй день

 

х+7/9х=240

1 7/9х=240

х=240:1 7/9

х=240:16/9

х=240*9/16

х=135га вспахали в первый день

 

135:9*7=105га вспахали во второй день

Answer 2

Calculation of Plowed Land

To calculate the amount of land plowed on each of the two days, we can use the information provided. It states that 240 hectares of land were plowed in two days, and on the second day, 7/9 of what was plowed on the first day was plowed.

Let's break down the calculation step by step:

1. On the first day, a total of 240 hectares of land were plowed. 2. On the second day, 7/9 of what was plowed on the first day was plowed.

To find out how much land was plowed on each day, we can use the following equation:

Land plowed on the first day + Land plowed on the second day = Total land plowed

Let's solve for the unknowns:

Let x be the land plowed on the first day. Then, 7/9 of x is the land plowed on the second day.

x + (7/9)x = 240

Simplifying the equation:

(16/9)x = 240

To solve for x, we can multiply both sides of the equation by (9/16):

x = (240 * 9) / 16

Now we can calculate the land plowed on each day:

Land plowed on the first day = x = (240 * 9) / 16 hectares Land plowed on the second day = (7/9)x = (7/9) * [(240 * 9) / 16] hectares

Let's calculate the values:

Land plowed on the first day = (240 * 9) / 16 = 135 hectares Land plowed on the second day = (7/9) * [(240 * 9) / 16] = 105 hectares

Therefore, 135 hectares of land were plowed on the first day, and 105 hectares of land were plowed on the second day.