Question

Решите задачу За несколько часов машина должна проехать 300 км через два часа после начала движения ей осталось проехать 180 км Сколько часов осталось ехать машине, если скорость её движения не изменится? решите пожалуйста

Answer 1

300-180=120(км) проехал автомобиль сначала
120:2=60(км/ч)скорость автомобиля
180:60=3 (ч) осталось ехать

Answer 2

Problem Analysis

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

Solution

To solve this problem, we can use the formula: distance = speed × time.

Let's assume the car's speed is s km/h and the remaining time is t hours.

According to the problem, the car has already traveled 120 km in the first two hours, so the remaining distance is 180 km. Using the formula, we can write the equation:

180 = s × t We need to solve this equation for t to find the remaining time.

Solving the Equation

To solve the equation, we can rearrange it to isolate t:

t = 180 / s Now we can substitute the given values into the equation to find the remaining time.

Calculation

Let's calculate