Question

Скорость автобуса равно 45 км/ч, что составляет 5/8 скорости автомобиля. через сколько времени автомобиль догонит автобус , если сейчас между ними 108 км. пж​

Answer 1

Ответ:

Через 4 часа автомобиль догонит автобус

Пошаговое объяснение:

автобус = 45км/ч

автомобиль = 5/8x=45

x=45/1*8/5=9*8=72км/ч

скорость нагона  v=(72-45)=27   S=108км

t=S/v=108/27=4 часа, нужно чтобы догнать автобус

Answer 2

1) 45 : 5/8 = 45 • 8/5 = 72 км/ч / скорость автомобиля.

2) 72 - 45 = 27 км/ч - скорость, с которой автомобиль догоняет автобус.

3) 108 : 27 = 4 часа - время, за которое автомобиль догонит автобус.

Ответ: 4 часа.

Answer 3

Calculation of Time for the Car to Catch up to the Bus

To calculate the time it takes for the car to catch up to the bus, we need to determine the speed of the car and the distance between them.

Given: - Speed of the bus = 45 km/h - Speed of the car = 5/8 * speed of the bus - Distance between the car and the bus = 108 km

Let's calculate the speed of the car first. According to the given information, the speed of the car is 5/8 of the speed of the bus.

Speed of the car = 5/8 * 45 km/h To find the time it takes for the car to catch up to the bus, we can use the formula:

Time = Distance / Speed

Substituting the values we have:

Time = 108 km / (5/8 * 45 km/h)

Simplifying the expression:

Time = 108 km / (5/8 * 45 km/h) = 108 km / (225/8) km/h

To divide by a fraction, we can multiply by its reciprocal:

Time = 108 km * (8/225) h/km

Simplifying further:

Time = (108 * 8) / 225 h

Calculating the numerator:

Time = 864 / 225 h

Now, we can simplify the fraction:

Time ≈ 3.84 hours

Therefore, it will take approximately 3.84 hours for the car to catch up to the bus.

Please note that the above calculation assumes constant speeds for both the car and the bus throughout the entire journey.