Question

Это задача 4 класса поможете так вот.Из Москвы и Саратова вышли одновременно навстречу друг другу два поезда.Скорость одного поезда 62 км/ч, а другого 74км/ч. На каком расстояние друг от друга будут находиться поезда через 9ч после начала движения, если от Москвы до Саратова 892 км? Напишите всё решение плиз.

Answer 1

1)найдём расстояние которое прошёл первый поезд
62*9=540+18=558км
2) второй поезд за это время проехал
74*9=630+36=666км
3) первому поезду осталось доехать
892км-558км=334км
4)второму осталось
892км-666км=226км
5) тогда расстояние между ними равно
892-226-334=892-560=332км
ответ 332 км

считал устно может где и ошибочка))

Answer 2

Problem Analysis

To solve this problem, we need to find the distance between the two trains after 9 hours of travel. We know the speeds of the trains and the distance between Moscow and Saratov.

Solution

Let's break down the problem step by step:

1. Calculate the distance each train has traveled after 9 hours: - Train 1: Speed = 62 km/h, Time = 9 hours - Train 2: Speed = 74 km/h, Time = 9 hours

To calculate the distance traveled, we can use the formula: Distance = Speed × Time.

- Distance traveled by Train 1 = 62 km/h × 9 hours - Distance traveled by Train 2 = 74 km/h × 9 hours

2. Calculate the total distance between the two trains: - Total distance = Distance from Moscow to Saratov - (Distance traveled by Train 1 + Distance traveled by Train 2)

Given that the distance from Moscow to Saratov is 892 km, we can substitute the values into the equation: - Total distance = 892 km - (Distance traveled by Train 1 + Distance traveled by Train 2)

3. Calculate the final answer: - The total distance between the two trains after 9 hours will be the calculated value from step 2.

Calculation

Let's calculate the distance between the two trains after 9 hours:

1. Distance traveled by Train 1: - Distance = 62 km/h × 9 hours = 558 km

2. Distance traveled by Train 2: - Distance = 74 km/h × 9 hours = 666 km

3. Total distance between the two trains: - Total distance = 892 km - (558 km + 666 km) - Total distance = 892 km - 1224 km - Total distance = -332 km

Answer

After 9 hours of travel, the two trains will be 332 km apart from each other.

Please let me know if you need any further assistance!