Question

Растояние меж гороами А и В 435 км в одно же время выехали две машины и зустрилися через 3 часа найдите скорость етих автомобилей если скорость второго на 5 км год менша

Answer 1

435 км:3 ч=145 км/ч (скорость сближения или сумма скоростей)
(145 км/ч-5 км/ч):2=140 км/ч:2=70 км/ч (скорость второго)
145 км/ч-70 км/ч=75 км/ч (скорость первого)
Ответ: скорость первого 75 км/ч, скорость второго 70 км/ч

Answer 2

Calculation of Speed

To find the speed of the two cars, we can use the formula:

Speed = Distance / Time

Given that the distance between the two cities A and B is 435 km and the cars meet after 3 hours, we can calculate the speed.

Let's assume the speed of the first car is x km/h and the speed of the second car is x - 5 km/h (since the second car's speed is 5 km/h less than the first car).

Using the formula, we can set up the following equation:

435 / x = 3

Solving this equation will give us the speed of the first car, and we can then calculate the speed of the second car.

Let's solve the equation:

435 / x = 3

To isolate x, we can multiply both sides of the equation by x:

435 = 3x

Now, divide both sides of the equation by 3:

x = 435 / 3

Calculating this, we find:

x ≈ 145 km/h

So, the speed of the first car is approximately 145 km/h.

To find the speed of the second car, we subtract 5 km/h from the speed of the first car:

145 - 5 = 140 km/h

Therefore, the speed of the second car is approximately 140 km/h.

So, the speed of the first car is approximately 145 km/h, and the speed of the second car is approximately 140 km/h.