Question

В первый день заасфальтировали 7/10 дороги, во второй день 2/15. Какую часть дороги осталось заасфальтировать?

Answer 1

Ответ

1/6

Объяснение:

$1-\frac{7}{10} -\frac{2}{15} =\frac{30}{30} -\frac{21}{30} -\frac{4}{30} =\frac{5}{30} =\frac{1}{6}$

Answer 2

Сначала узнаем сколько уже заасфальтировали: 7/10+2/15=5/6. Целая дорога это 1 то есть 6/6. 6/6-5/6=1/6 осталось заасфальтировать.

Ответ: 1/6

Answer 3

Calculation of Remaining Road to be Paved

To calculate the remaining portion of the road that needs to be paved, we need to subtract the portions of the road that have already been paved from the total length of the road.

Let's assume that the total length of the road is represented by the variable `total_length`.

On the first day, 7/10 of the road was paved, which can be represented as `7/10 * total_length`.

On the second day, 2/15 of the road was paved, which can be represented as `2/15 * total_length`.

To calculate the remaining portion of the road, we subtract the sum of the portions paved on the first and second days from the total length of the road:

remaining_length = total_length - (7/10 * total_length) - (2/15 * total_length)

Simplifying the equation:

remaining_length = total_length - (7/10 + 2/15) * total_length

To find the fraction of the road that remains to be paved, we divide the remaining length by the total length:

remaining_fraction = remaining_length / total_length

Now let's calculate the remaining fraction of the road to be paved.

Calculation:

Let's assume that the total length of the road is 1 unit for simplicity.

On the first day, 7/10 of the road was paved, which is 7/10 * 1 = 0.7.

On the second day, 2/15 of the road was paved, which is 2/15 * 1 = 0.1333.

To calculate the remaining portion of the road, we subtract the sum of the portions paved on the first and second days from the total length of the road:

remaining_length = 1 - (0.7 + 0.1333) = 0.1667.

Therefore, the remaining fraction of the road to be paved is 0.1667.

Answer:

The remaining fraction of the road that needs to be paved is approximately 0.1667.