Question

За несколько часов машина должна проехать 300км. Через два часа после начала движения ей осталось проехать 180 км. Сколько часов ей осталось ехать,если скорость её движения не изменится? ПОЖАЛУЙСТА ПОМОГИТЕ ИНАЧЕ МЕНЯ МАМА ПРИБЬЕТ!!!!!!!!

Answer 1

Так как машине через 2 часа движения осталось проехать 180 км, то за эти 2 часа машина проехала: S₁ = S - S' =  300 - 180 = 120 (км).

Скорость машины: v = S₁/t₁ = 120:2 = 60 (км/ч)

Время на преодоление оставшегося расстояния при той же скорости:
                                 t' = S'/v = 180:60 = 3 (ч)

Ответ: 3 ч.

Answer 2

300-180=120 км машина проехала за 2 часа120:2=60 км/ч скорость машины180:60=3 часаОтвет 3 часа
вот вроде так

Answer 3

Problem Analysis

We are given that a car needs to travel a total distance of 300 km and after two hours of driving, it has 180 km left to travel. We need to determine how many more hours the car needs to travel if its speed remains constant.

Solution

To solve this problem, we can use the formula:

Distance = Speed × Time

Let's denote the speed of the car as S and the time it needs to travel as T. We can set up the following equations based on the given information:

1. After two hours of driving, the car has 180 km left to travel: 180 = S × 2 2. The total distance the car needs to travel is 300 km: 300 = S × T

We can solve these equations to find the values of S and T.

Calculation

From equation 1, we can solve for S: 180 = S × 2 Dividing both sides by 2: S = 90 km/h

Now, we can substitute the value of S into equation 2: 300 = 90 × T Dividing both sides by 90: T = 3.33 hours

Answer

If the car's speed remains constant, it will take approximately 3.33 hours for it to travel the remaining 180 km.

Please note that the given information does not specify the units for speed and time, so we assumed them to be in kilometers per hour (km/h) and hours (h) respectively.

I hope this helps! Let me know if you have any further questions.