Question

Лыжники пршли за 7 часов первого дня 70 км , за 5 часов второго дня 60км , а за 6 часов третьего дня 50км . Найди среднюю скорость движения лыжников

Answer 1

Всего были в пути 7+5+6=18часов
прошли 70+60+50=180км.
V=S/t    180/18=10км/ч

Answer 2

Calculation of Average Speed

To find the average speed of the skiers, we can use the formula:

Average Speed = Total Distance / Total Time

Let's calculate the average speed step by step using the given information:

1. On the first day, the skiers covered a distance of 70 km in 7 hours. 2. On the second day, they covered a distance of 60 km in 5 hours. 3. On the third day, they covered a distance of 50 km in 6 hours.

To calculate the total distance, we add up the distances covered on each day:

Total Distance = 70 km + 60 km + 50 km

To calculate the total time, we add up the time taken on each day:

Total Time = 7 hours + 5 hours + 6 hours

Now, let's calculate the average speed:

Average Speed = (Total Distance) / (Total Time)

Average Speed = (70 km + 60 km + 50 km) / (7 hours + 5 hours + 6 hours)

Average Speed = 180 km / 18 hours

Average Speed = 10 km/h

Therefore, the average speed of the skiers is 10 km/h.