Question

Боря бросился догонять сашу когда расстояние между ними было а м . боря бежит со скоростью n м /мин а скорость саши состовляет три четвертых скорости бори. через какое время боря догонит сашу

Answer 1

1) n:4•3 (м/мин)-скорость бори
2) n-(n:4•3) (м/мин)-скорость опережения
3) a:(n-(n:4•3) (м/мин) время через которое Боря догонит Сашу

Answer 2

Problem Analysis

Borya is chasing Sasha when the distance between them is "a" meters. Borya runs at a speed of "n" meters per minute, while Sasha's speed is three-fourths of Borya's speed. We need to determine how long it will take for Borya to catch up to Sasha.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's break down the solution into steps:

1. Calculate Sasha's speed: Sasha's speed is three-fourths of Borya's speed. So, Sasha's speed is (3/4) * n meters per minute.

2. Calculate the time it takes for Borya to catch up to Sasha: The distance between Borya and Sasha is "a" meters. Borya is chasing Sasha, so the distance Borya needs to cover to catch up to Sasha is also "a" meters. Therefore, the time it takes for Borya to catch up to Sasha is a / (n - (3/4) * n) minutes.

Let's calculate the time it takes for Borya to catch up to Sasha using the given values.

Calculation

Given: - Distance between Borya and Sasha: "a" meters - Borya's speed: "n" meters per minute

1. Sasha's speed: (3/4) * n meters per minute.

2. Time it takes for Borya to catch up to Sasha: a / (n - (3/4) * n) minutes.

Substituting Values

Let's substitute the given values into the formula to calculate the time it takes for Borya to catch up to Sasha.

- Sasha's speed: (3/4) * n meters per minute. - Time it takes for Borya to catch up to Sasha: a / (n - (3/4) * n) minutes.

Final Answer

After substituting the values, we get the time it takes for Borya to catch up to Sasha.