Question

адание 2. Отец с сыном вышли на прогулку. У отца длина шага на 30% больше, чем у сына, но зато сын за одно и тоже время с отцом успевает сделать на 30% больше шагов. Кто быстрее сможет пройти 5 км: отец или сын?

Answer 1

1)30*5=150(%) 2)150-30=120(%)           ответ сын 150%

Answer 2

одновременно. берем шаг сына за 100, а шаг отца за 130.

прошло какоето время, отец прошел 10 шагов, а сын 13.

100 * 13=1300

и 130 * 10= 1300 

 метод научного тыка, а посему пиши сразу ответ и учителю смотреть решение не давай! скажи, что гениальная личность и решаешь устно, но второй раз не сможешь, ибо голова перегрелась)но как примерно решать лучше запомнит - в походе пригодится

Answer 3

Task 2: Father and Son Walking

In this task, we are given the information that the father has a 30% longer stride length than the son, but the son is able to take 30% more steps than the father in the same amount of time. We need to determine who will be able to walk 5 km faster: the father or the son.

To solve this problem, let's break it down step by step:

1. Calculate the stride length of the son: - Let's assume the son's stride length is x. - Since the father's stride length is 30% longer, the father's stride length would be x + 0.3x or 1.3x.

2. Calculate the number of steps taken by the son and the father in the same amount of time: - Let's assume the son takes y steps in the given time. - Since the son takes 30% more steps than the father, the father would take y - 0.3y or 0.7y steps.

3. Calculate the distance covered by the son and the father in the given time: - The distance covered by the son would be x * y. - The distance covered by the father would be 1.3x * 0.7y.

4. Compare the distances covered by the son and the father: - We need to determine who can cover a distance of 5 km faster. - If the distance covered by the son is greater than 5 km, then the son is faster. - If the distance covered by the father is greater than 5 km, then the father is faster. - If both distances are equal to 5 km, then they will finish at the same time.

Let's calculate the distances covered by the son and the father:

1. The son's stride length is x. 2. The father's stride length is 1.3x. 3. The son takes y steps. 4. The father takes 0.7y steps.

Now, let's calculate the distances covered by the son and the father:

- The distance covered by the son is x * y. - The distance covered by the father is 1.3x * 0.7y.

To determine who will be able to walk 5 km faster, we need to compare these distances to 5 km.

Calculating the Distances Covered

Let's assume the son's stride length is x and the son takes y steps.

The distance covered by the son is given by x * y.

Now, let's calculate the distance covered by the father:

- The father's stride length is 30% longer than the son's, so the father's stride length is 1.3x. - The father takes 30% fewer steps than the son, so the father takes 0.7y steps.

The distance covered by the father is given by 1.3x * 0.7y.

Comparing the Distances Covered

Now that we have the distances covered by the son and the father, let's compare them to 5 km:

- If the distance covered by the son is greater than 5 km, then the son is faster. - If the distance covered by the father is greater than 5 km, then the father is faster. - If both distances are equal to 5 km, then they will finish at the same time.

Let's calculate the distances covered by the son and the father and compare them to 5 km:

- The distance covered by the son is x * y. - The distance covered by the father is 1.3x * 0.7y.

Now, let's compare these distances to 5 km to determine who will be able to walk 5 km faster.