The field area is 80 hectares. During the day, 35% of the total area was plowed. Find the area of the plowed part.

It is known from the condition that the field area is 80 hectares. It is also known that 35% of the total area was plowed in a day. In order to find the area of the plowed part, we will compose and solve the proportion.

Let’s take the area of the entire field as 100%. And using the variable x ha, the area of the plowed field.

We proceed to drawing up and solving the proportion.

80 hectares – 100%;

x ha – 35%.

We got the proportion:

80 / x = 100/35;

We are looking for an unknown middle term of the proportion:

x = (80 * 35) / 100 = 2800/100 = 28 hectares of fields plowed.

Answer: 28 hectares have been plowed.