Question

У Ани две ленты: зелёная и жёлтая. Зелёная лента на 3 дм длиннее желтой. Аня отрезала от зелёной ленты 6 дм, а от желтой 2 дм. Какая лента стала длиннее? На сколько сантиметров? Помогите пожалуйста!!!!!!!!!!!

Answer 1

Возьмём к примеру зелёная= 100 см
1)100-30=70(см) жёлтая лента
2)100-60=40(см)стала зелёная лента после того как отрезали
3)70-20=50(см)стала жёлтая после того как отрезали
4)50-40=10(см)
Ответ:На 10 см жёлтая стала длинее зелёной.

Answer 2

Problem Analysis

Аня has two ribbons: a green ribbon and a yellow ribbon. The green ribbon is 3 dm longer than the yellow ribbon. Аня cut off 6 dm from the green ribbon and 2 dm from the yellow ribbon. We need to determine which ribbon became longer and by how many centimeters.

Solution

Let's calculate the initial lengths of the green and yellow ribbons.

Let's assume the length of the yellow ribbon is x dm. Since the green ribbon is 3 dm longer, its length would be x + 3 dm.

Аня cut off 6 dm from the green ribbon, so the remaining length of the green ribbon is (x + 3) - 6 dm.

Аня also cut off 2 dm from the yellow ribbon, so the remaining length of the yellow ribbon is x - 2 dm.

To determine which ribbon became longer, we need to compare the remaining lengths of the green and yellow ribbons.

If the remaining length of the green ribbon is greater than the remaining length of the yellow ribbon, then the green ribbon became longer. Otherwise, the yellow ribbon became longer.

Let's calculate the remaining lengths of the ribbons and determine which one became longer.

Calculation

The remaining length of the green ribbon is (x + 3) - 6 dm.

The remaining length of the yellow ribbon is x - 2 dm.

To find the difference in length, we subtract the length of the yellow ribbon from the length of the green ribbon:

[(x + 3) - 6] - (x - 2)

Simplifying the expression:

x + 3 - 6 - x + 2

Combining like terms:

-1

The difference in length is -1 dm. Since the difference is negative, it means that the yellow ribbon became longer than the green ribbon.

Answer

The yellow ribbon became longer than the green ribbon by 1 centimeter.