Question

Шофер автомашины "Волга" рассчитывал проехать 270 км. от села до города за 3 ч. и быть в 12 ч. дня. однако через час после его выезда из села началась метель, и шофер снизил скорость до 80 км/ч. В какое время шофер прибыл в город?

Answer 1

Calculation of Arrival Time

To calculate the arrival time of the driver in the city, we need to consider the initial plan and the change in speed due to the blizzard.

The driver planned to travel a distance of 270 km from the village to the city in 3 hours and arrive at 12:00 PM. However, after an hour of driving, a blizzard started, and the driver reduced the speed to 80 km/h.

To calculate the arrival time, we can use the formula:

Arrival Time = Departure Time + Travel Time

Let's break down the calculation step by step:

1. Departure Time: The driver left the village at 9:00 AM (given in the question).

2. Travel Time: We need to calculate the time it takes to cover the remaining distance at a reduced speed of 80 km/h.

- Distance remaining after driving for an hour: 270 km - 80 km = 190 km. - Time to cover the remaining distance: Time = Distance / Speed. - Time = 190 km / 80 km/h = 2.375 hours.

3. Arrival Time: Adding the travel time to the departure time will give us the arrival time.

- Arrival Time = 9:00 AM + 2.375 hours = 11:22 AM.

Therefore, the driver arrived in the city at approximately 11:22 AM.

Please note that the calculated arrival time is an approximation and may vary slightly depending on the exact distance and speed values.