Question

Спортсмен проплыл дистанцию за 8 минут. Первые 5 минут он плыл со скоростью 90м/мин, после чего его скорость снизилась до 4 м /мин. Найдите длину дистанции.

Answer 1

Calculation of the Distance

To find the length of the distance, we need to calculate the total distance covered during the first 5 minutes and the remaining distance covered in the next 3 minutes.

During the first 5 minutes, the sportsman swam at a speed of 90 m/min. Therefore, the distance covered in the first 5 minutes can be calculated as:

Distance1 = Speed1 x Time1

where Speed1 = 90 m/min and Time1 = 5 min.

During the next 3 minutes, the sportsman's speed decreased to 4 m/min. Therefore, the distance covered in the next 3 minutes can be calculated as:

Distance2 = Speed2 x Time2

where Speed2 = 4 m/min and Time2 = 3 min.

To find the total distance, we need to add Distance1 and Distance2:

Total Distance = Distance1 + Distance2

Let's calculate the values:

Distance1 = 90 m/min x 5 min = 450 m

Distance2 = 4 m/min x 3 min = 12 m

Total Distance = 450 m + 12 m = 462 m

Therefore, the length of the distance is 462 meters.