Question

Две группы туристов отправились из села Грибное в Ягодное в 10ч утра. Первая группа двигулась пешком по берегуреки со скоростью 4км/ч ,а вторая - вдоль берега на лодках со скоростю 14км/ч. Первая группадобралась до места к 5 ч вечера .Вкакое времяприбыла в село Ягодное вторая группа туристов. Можно по быстрей пожалуйста и там 4 действия.

Answer 1

5ч вечера=17ч
17-10=7(ч) время в пути первой
4*7=28(км) до места
28:14=2(ч) в пути вторая
10+2=12(часов)

Answer 2

Problem Analysis

We are given that two groups of tourists started their journey from the village of "Грибное" to the village of "Ягодное" at 10:00 AM. The first group traveled on foot along the riverbank at a speed of 4 km/h, while the second group traveled by boat along the shore at a speed of 14 km/h. The first group arrived at their destination at 5:00 PM. We need to determine the time at which the second group arrived in the village of "Ягодное".

Solution

To find the time at which the second group arrived in the village of "Ягодное", we need to calculate the time it took for them to travel the distance between the two villages.

Let's assume the distance between the two villages is d kilometers.

The first group traveled at a speed of 4 km/h and arrived at their destination in 7 hours (from 10:00 AM to 5:00 PM). Therefore, we can calculate the distance d using the formula:

d = speed * time

where the speed is 4 km/h and the time is 7 hours.

Substituting the values, we get:

d = 4 km/h * 7 h = 28 km

Now, we can calculate the time it took for the second group to travel the same distance using their speed of 14 km/h:

time = distance / speed

Substituting the values, we get:

time = 28 km / 14 km/h = 2 hours

Since the second group started their journey at 10:00 AM, we can add the travel time of 2 hours to find their arrival time:

Arrival time = 10:00 AM + 2 hours = 12:00 PM

Therefore, the second group of tourists arrived in the village of "Ягодное" at 12:00 PM.

Answer

The second group of tourists arrived in the village of "Ягодное" at 12:00 PM.