Question

Два брата отправились одновременно в противоположных направлениях выполнять желания через 5 секунд между ними было 715 метров скорость одного брата 65м/с найди скорость другого

Answer 1

65*5=325 м прошел  2 брат
715-325=390 м прошел 1 брат
390:5=75 ср скорость 1 брата

Answer 2

Problem Analysis

Two brothers start simultaneously in opposite directions to fulfill their wishes. After 5 seconds, there is a distance of 715 meters between them. The speed of one brother is given as 65 m/s. We need to find the speed of the other brother.

Solution

Let's assume the speed of the other brother is x m/s.

We know that distance = speed × time.

For the first brother: Distance1 = speed1 × time = 65 m/s × 5 s = 325 m

For the second brother: Distance2 = speed2 × time = x m/s × 5 s = 5x m

The total distance between the two brothers is given as 715 m.

So, Distance1 + Distance2 = 715 m

325 m + 5x m = 715 m

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

Calculation

325 m + 5x m = 715 m

Subtracting 325 m from both sides:

5x m = 715 m - 325 m

5x m = 390 m

Dividing both sides by 5:

x m = 390 m / 5

x m = 78 m/s

Answer

The speed of the other brother is 78 m/s.