Question

Из пункта А в пункт Б автомобиль со скоростью 60 км/ч приехал за 3,5 часа.На сколько он увеличил скорость на обратном пути если он ехал из Б в А приехал за 3 часа?

Answer 1

Ответ:

60•3,5= 210(км) общее расстояние

210:3= 70(км/ч) ехал из Б в А

70-60=10(км/ч)

ответ: Увеличил на 10 км/ч

Answer 2

Calculating the Increase in Speed

To calculate the increase in speed on the return trip from point B to point A, we can use the formula:

Speed = Distance / Time

Given that the distance from point A to point B is the same as the distance from point B to point A, we can use the same distance for both calculations.

From A to B:

- Speed = Distance / Time - Speed = 60 km/h (initial speed) - Time = 3.5 hours - Distance = Speed * Time - Distance = 60 km/h * 3.5 h - Distance = 210 km

From B to A:

- Time = 3 hours (return trip time)

Now, we can calculate the speed for the return trip using the same distance:

- Speed = Distance / Time - Speed = 210 km / 3 hours - Speed = 70 km/h

The increase in speed on the return trip is 10 km/h.

This calculation shows that the car increased its speed by 10 km/h on the return trip from point B to point A.