Question

За несколько часов машина должна проехать 300 км. Через 3 часа после начала движения ей осталось проехать 120 км. Сколько часов осталось ехать машине, если скорость её движения не изменилась?

Answer 1

300-120=180(км)-проехал машина
180/3=60(км/ч)-V
120/60=2(ч)

Answer 2

300-120=180(проїхавв за 3 год)
180÷3=60(км/год)
120÷60=2(год ще буде їхати)
Відповідь: залишилося 2 год

Answer 3

Calculation of Remaining Time for the Car to Travel

To calculate the remaining time for the car to travel, we need to determine the car's speed. We are given that the car needs to travel a total distance of 300 km and that after 3 hours of driving, it has 120 km left to travel. We are also told that the car's speed has not changed.

Let's assume that the car's speed is x km/h.

We can use the formula distance = speed × time to calculate the time it took the car to travel the initial distance of 300 km and the time it will take to travel the remaining distance of 120 km.

For the initial distance of 300 km: 300 km = x km/h × t1 For the remaining distance of 120 km: 120 km = x km/h × t2 Since the car's speed has not changed, we can set the two equations equal to each other:

300 km = 120 km × (t1 / t2)

Simplifying