Question

1) От одной кормушки в противоположных направлениях вылетели два воробья . Через 3 часа расстояние между ними стало 234 км. Скорость первого воробья 38 км в час . Найдите скорость второго воробья.

Answer 1

234:3=78 км\час скорость удаления
78-38=40 км/час скорость второго воробья
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2 способ
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38*3=114 км пролетел первый воробей за 3 часа
234-114=120 км пролетел второй воробей за 3 часа
120:3=40 км\час скорость второго воробья

Answer 2

Problem Analysis

We are given the following information: - Two sparrows flew out in opposite directions from the same feeder. - After 3 hours, the distance between them became 234 km. - The speed of the first sparrow is 38 km/h.

We need to find the speed of the second sparrow.

Solution

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

Since the sparrows are flying in opposite directions, the distance between them is increasing at a rate equal to the sum of their speeds.

After 3 hours, the distance between them is 234 km. Therefore, we can write the equation:

Distance = Speed × Time

For the first sparrow: 38 km/h × 3 hours = 114 km

For the second sparrow: x km/h × 3 hours = 3x km

The sum of the distances covered by both sparrows is equal to the total distance between them:

114 km + 3x km = 234 km

Now, we can solve this equation to find the value of x.

114 km + 3x km = 234 km

Subtracting 114 km from both sides:

3x km = 120 km

Dividing both sides by 3:

x km = 40 km/h

Therefore, the speed of the second sparrow is 40 km/h.

Answer

The speed of the second sparrow is 40 km/h.