Question

От дома до школы - 900 м. Сколько времени займёт дорога в школу, если три десятых этого расстояния идти со скоростью 90 м/мин, а оставшуюся часть - соскоростью 70 м/мин?

Answer 1

Тут явно осечка а почему и нет

Answer 2

Здесь явно опечатка!

Answer 3

Calculating Time Taken to Reach School

To calculate the time it will take to reach school, we can use the formula: time = distance / speed. Given that the distance from home to school is 900 meters, and three-tenths of this distance is covered at a speed of 90 m/min, while the remaining distance is covered at a speed of 70 m/min, we can calculate the total time taken.

First, let's calculate the time taken to cover the first part of the distance at 90 m/min: - Distance = 900 m * 3/10 = 270 m - Speed = 90 m/min - Time = Distance / Speed = 270 m / 90 m/min = 3 minutes

Next, we'll calculate the time taken to cover the remaining distance at 70 m/min: - Distance = 900 m - 270 m = 630 m - Speed = 70 m/min - Time = Distance / Speed = 630 m / 70 m/min = 9 minutes

Total Time Taken

The total time taken to reach school is the sum of the times taken for each part of the distance: - Total Time = 3 minutes + 9 minutes = 12 minutes

So, it will take 12 minutes to reach school from home, given the specified speeds for different parts of the distance.