Question

А)Во время весеннего сева за первую неделю было засеяно 3/7 пашни ,а за вторую -оставшиеся 76 га .Найдите площадь пашни. б)За первый день автотуристы проехали 48% пути ,а за второй-оставшиеся 1092 км .Найдите длину пути. в)Площадь комнаты 15,4 квадратных метров ,что составляет 22% площади всей квартиры .Найдите площадь квартиры.

Answer 1

А). 1-3/7=4/7 засеяли во 2 неделю
76:(4/7)=133 га - площадь пашни

б). 100%-48%=52% пути проехали туристы за 2-й день
1092:52*100=2100 км длина пути

в). 14,4:22*100=70 кв.м площадь всей квартиры

Answer 2

Task A: Finding the Area of the Field

To find the area of the field, we need to determine the total area of the field and then subtract the area sown during the first week.

Let's assume the total area of the field is x hectares.

According to the given information, during the first week, 3/7 of the field was sown. This means that 3/7 of the total area was sown, which is equal to (3/7)x hectares.

During the second week, the remaining area of the field, which is 76 hectares, was sown.

To find the total area of the field, we can set up the following equation:

(3/7)x + 76 = x

Now, let's solve the equation to find the value of x:

(3/7)x + 76 = x

Multiplying both sides of the equation by 7 to eliminate the fraction:

3x + 532 = 7x

Subtracting 3x from both sides of the equation:

532 = 4x

Dividing both sides of the equation by 4:

x = 133

Therefore, the total area of the field is 133 hectares.

Task B: Finding the Length of the Trip

To find the length of the trip, we need to determine the total distance and then subtract the distance traveled during the first day.

Let's assume the total distance of the trip is x kilometers.

According to the given information, the travelers covered 48% of the distance on the first day, which is equal to (48/100)x kilometers.

During the second day, the remaining distance, which is 1092 kilometers, was covered.

To find the total distance of the trip, we can set up the following equation:

(48/100)x + 1092 = x

Now, let's solve the equation to find the value of x:

(48/100)x + 1092 = x

Multiplying both sides of the equation by 100 to eliminate the fraction:

48x + 109200 = 100x

Subtracting 48x from both sides of the equation:

109200 = 52x

Dividing both sides of the equation by 52:

x = 2100

Therefore, the total length of the trip is 2100 kilometers.

Task C: Finding the Area of the Apartment

To find the area of the apartment, we need to determine the total area and then calculate the area of the room.

Let's assume the total area of the apartment is x square meters.

According to the given information, the room occupies 22% of the total area, which is equal to (22/100)x square meters.

The area of the room is given as 15.4 square meters.

To find the total area of the apartment, we can set up the following equation:

(22/100)x = 15.4

Now, let's solve the equation to find the value of x:

(22/100)x = 15.4

Multiplying both sides of the equation by 100 to eliminate the fraction:

22x = 1540

Dividing both sides of the equation by 22:

x = 70

Therefore, the total area of the apartment is 70 square meters.