Question

Тракторист должен вспахать две пятых поля.До обеда он вспахал 3 двацатых поля.Какую часть поля ему осталось вспахать? Решение полностью.

Answer 1

2/5 = 8/20 - должен вспахать
8/20 - 3/20 = 5/20 = 1/4 - осталось вспахать

Answer 2

Task: Calculating the Remaining Portion of the Field to Plow

To determine the remaining portion of the field that the tractor driver needs to plow, we need to calculate the difference between the total area of the field and the area that has already been plowed.

Let's break down the information provided:

- The tractor driver needs to plow two-fifths of the field. - Before lunchtime, the driver has already plowed three-twentieths of the field.

To calculate the remaining portion of the field, we can subtract the area that has already been plowed from the total area of the field.

Calculation:

1. Convert the fractions to a common denominator: - Two-fifths can be written as 8/20. - Three-twentieths can be written as 3/20.

2. Subtract the area that has already been plowed from the total area of the field: - Total area of the field: 8/20 - Area already plowed: 3/20

Subtracting the area already plowed from the total area gives us:

8/20 - 3/20 = 5/20

Therefore, the tractor driver still needs to plow 5/20 of the field.

Simplification:

To simplify the fraction, we can divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 5 and 20 is 5.

Dividing both the numerator and denominator by 5, we get:

5/20 ÷ 5/5 = 1/4

Therefore, the remaining portion of the field that the tractor driver needs to plow is one-fourth.

Answer:

The tractor driver still needs to plow one-fourth of the field.

Please let me know if there is anything else I can help you with!