Question

От пристани отплыла лодка и одновременно навстречу ей от пункта А отплыл плот.Лодка и плот встретились через2 часа.Через30мин.после встречи лодка прибыла в пункт А.Через какое время после встречи плот прибыл на пристань.....????

Answer 1

Через 1 час 30 минут! Очень легко!!

Answer 2

Problem Analysis

We have a scenario where a boat and a raft start from different points and meet after 2 hours. The boat then arrives at its starting point 30 minutes after the meeting. We need to determine how long it takes for the raft to reach its starting point after the meeting.

Solution

Let's assume that the boat's speed is B and the raft's speed is R. We can use the formula: distance = speed × time to solve this problem.

1. Let's calculate the distance traveled by the boat in 2 hours: - Distance traveled by the boat = B × 2

2. We know that the boat arrives at its starting point 30 minutes after the meeting. Let's convert 30 minutes to hours: - 30 minutes = 30/60 = 0.5 hours

3. Now, let's calculate the time taken by the boat to reach its starting point after the meeting: - Time taken by the boat = 2 hours + 0.5 hours = 2.5 hours

4. Since the boat and the raft meet after 2 hours, the raft travels for an additional 0.5 hours to reach the meeting point. Therefore, the raft takes 0.5 hours less than the boat to reach its starting point after the meeting.

5. Finally, let's calculate the time taken by the raft to reach its starting point after the meeting: - Time taken by the raft = 2.5 hours - 0.5 hours = 2 hours

Therefore, the raft takes 2 hours to reach its starting point after the meeting.

Answer

After the meeting, the raft takes 2 hours to reach its starting point.