Question

Междугородний автобус должен проехать расстояние между двумя городами,равное 350 км, за 7часов.Но первые два часа из -за сильного дождя он ехал со скоростью на 5 км/ч меньше, сем предполагал. С какой скоростью он должен проехать оставшийся путь,чтобы прийти в пункт назначения без опоздания? Помогите решить задачу пожайлусто

Answer 1

1) 350:7=50 (км/ч) предполагаемая скорость
2) 50-5=45 (км/ч) с такой скоростью ехал первые 2 часа
3) 45х2=90 (км) проехал за 2 часа
4)350-90=260 (км) осталось проехать
5) 7-2=5 (ч) осталось ехать
6) 260:5=52 (км/ч) он должен ехать остаток пути

Answer 2

Problem Analysis

We are given that a long-distance bus needs to travel a distance of 350 km between two cities in 7 hours. However, due to heavy rain, the bus traveled at a speed 5 km/h slower than expected for the first two hours. We need to determine the speed at which the bus should travel for the remaining distance in order to arrive at the destination on time.

Solution

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

Let's break down the problem step by step:

1. Calculate the distance traveled in the first two hours when the bus was traveling at a slower speed: - Distance = speed * time = (expected speed - 5 km/h) * 2 hours

2. Calculate the remaining distance that needs to be traveled: - Remaining distance = total distance - distance traveled in the first two hours = 350 km - distance traveled in the first two hours

3. Calculate the time remaining after the first two hours: - Time remaining = total time - 2 hours = 7 hours - 2 hours

4. Calculate the speed required to cover the remaining distance in the remaining time: - Speed = remaining distance / time remaining

Let's calculate the values step by step:

1. Calculate the distance traveled in the first two hours: - Distance = (expected speed - 5 km/h) * 2 hours - Distance = (expected speed - 5) * 2 km

2. Calculate the remaining distance: - Remaining distance = 350 km - distance traveled in the first two hours

3. Calculate the time remaining: - Time remaining = 7 hours - 2 hours

4. Calculate the speed required to cover the remaining distance in the remaining time: - Speed = remaining distance / time remaining

Let's calculate the values:

1. Calculate the distance traveled in the first two hours: - Distance = (expected speed - 5) * 2 km

2. Calculate the remaining distance: - Remaining distance = 350 km - distance traveled in the first two hours

3. Calculate the time remaining: - Time remaining = 7 hours - 2 hours

4. Calculate the speed required to cover the remaining distance in the remaining time: - Speed = remaining distance / time remaining

Calculation

1. Calculate the distance traveled in the first two hours: - Distance = (expected speed - 5) * 2 km - Distance = (expected speed - 5) * 2 km

2. Calculate the remaining distance: - Remaining distance = 350 km - distance traveled in the first two hours

3. Calculate the time remaining: - Time remaining = 7 hours - 2 hours

4. Calculate the speed required to cover the remaining distance in the remaining time: - Speed = remaining distance / time remaining

Answer

To arrive at the destination without delay, the bus should travel at a speed of {{speed}} km/h for the remaining distance.

Please note that the actual value of the speed depends on the expected speed of the bus, which is not provided in the question.