Question

расстояние между А и В 244км из них одновременно навстречу друг другу два автомобиля и встретились через два часа скорость одного из них 50 км/ч найдите скорость второго автомобиля​

Answer 1

Ответ:

Пошаговое объяснение:

Скорость 1 = 50 км/ч

Скорость 2 = х км/ч

(50 + х) * 2 = 244

50 + х = 244 : 2

50 + х = 122

х = 122 - 50

х = 72

Скорость 2 = (х) = 72 км/ч

Проверка:

1) 50 + 72 = 122 (км/ч) - скорость сближения

2) 244 : 122 = 2 (часа) - они встретились

Ответ: 72 км/ч

Answer 2

1) 50 * 2=100 км проехал за 2 часа автомобиль со скоростью 50 км/ч.

2) 244 - 100=144 км проехал второй.

3) 144 : 2=72 км/ч - скорость автомобиля, проехавшего за 2 часа 144 км.

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2 способ:

1) 244 : 2=122 км/ч  -  скорость сближения.

2) 122 - 50=72 км/ч  -  скорость второго автомобиля, т.к. скорость сближения при встречном движении равна сумме скоростей 2-х автомобилей.

Answer 3

Problem Analysis

We are given that two cars are traveling towards each other and meet after two hours. The total distance between the two cars is 244 km. We are also given the speed of one of the cars, which is 50 km/h. We need to find the speed of the second car.

Solution

Let's assume the speed of the second car is x km/h.

Since the two cars are traveling towards each other, their combined speed is the sum of their individual speeds. Therefore, the combined speed of the two cars is 50 km/h + x km/h.

We can use the formula distance = speed × time to calculate the distance traveled by each car.

For the first car: - Speed = 50 km/h - Time = 2 hours - Distance = Speed × Time = 50 km/h × 2 hours = 100 km

For the second car: - Speed = x km/h - Time = 2 hours - Distance = Speed × Time = x km/h × 2 hours = 2x km

Since the total distance between the two cars is 244 km, we can set up the following equation:

100 km + 2x km = 244 km

Simplifying the equation:

2x km = 244 km - 100 km

2x km = 144 km

Dividing both sides of the equation by 2:

x km = 144 km / 2

x km = 72 km/h

Therefore, the speed of the second car is 72 km/h.

Answer

The speed of the second car is 72 km/h.