Question

Первые два часа лыжник шел со скоростью 18 км.ч,потом 2ч со скоростью 15 км.ч и еще 2 ч со скоростью 12 км.ч . какое расстояние прошел лыжник?с какой скоростью должен двигаться лыжник,чтобы пройти это расстояние за 5ч.?

Answer 1

Прошел 90 км чтобы пройти это расстояние должен идти со скоростью 18 км в час

Answer 2

Calculation of Distance Traveled

To calculate the distance traveled by the skier, we need to calculate the distance covered during each leg of the journey and then sum them up.

The skier traveled at a speed of 18 km/h for the first 2 hours, 15 km/h for the next 2 hours, and 12 km/h for the final 2 hours.

To calculate the distance covered during each leg, we can use the formula:

Distance = Speed × Time

For the first leg: Distance1 = 18 km/h × 2 h = 36 km

For the second leg: Distance2 = 15 km/h × 2 h = 30 km

For the third leg: Distance3 = 12 km/h × 2 h = 24 km

Now, we can calculate the total distance traveled by summing up the distances covered during each leg:

Total Distance = Distance1 + Distance2 + Distance3

Let's calculate the total distance traveled by the skier:

Total Distance = 36 km + 30 km + 24 km = 90 km

Therefore, the skier traveled a total distance of 90 km.