Question

Ваня и Саша живут в одном доме. Ваня идет от дома до школы 30 минут,а Саша 40 минут.через сколько минут Ваня догонит Сашу,если Саша вышел из дома на 5 минут раньше Вани.

Answer 1

Через 15 мин 
1/8;1/120=15 мин

Answer 2

Он его догонит в школе 

Answer 3

Problem Analysis

We are given that Vanya and Sasha live in the same house. Vanya takes 30 minutes to walk from home to school, while Sasha takes 40 minutes. Sasha leaves the house 5 minutes before Vanya. We need to determine how many minutes it will take for Vanya to catch up to Sasha.

Solution

To solve this problem, we can set up an equation based on the given information. Let's assume that it takes x minutes for Vanya to catch up to Sasha.

Since Sasha leaves the house 5 minutes before Vanya, Sasha has already been walking for 5 minutes when Vanya starts walking. Therefore, Sasha has a head start of 5 minutes.

During the time it takes for Vanya to catch up to Sasha, Sasha will continue walking for x minutes. In that same time, Vanya will walk for x + 5 minutes.

Since Vanya takes 30 minutes to walk from home to school, we can set up the following equation:

x + 5 = 30

Now, we can solve for x:

x = 30 - 5 x = 25

Therefore, it will take Vanya 25 minutes to catch up to Sasha.

Answer

Vanya will catch up to Sasha in 25 minutes.