Question

Мотоциклист проехал проехал расстояние от одного города до другого за 3 часа двигаясь со скоростью 54 км/ ч. Сколько времени потребуется мотоциклисту на обратный путь,но уже по другой дороге,если она длиннее первой на 22 км,а его скорость будет меньше прежней на 8 км/ ч.

Answer 1

S=54*3=162
162+22=184, 54-8=46
T=184/46=4
Ответ 4 часа 

Answer 2

Сначала выясним какое расстояние он проехал по первой дороге. S1 = v1 * t1 . S1 = 54 * 3 = 162 км.
Теперь подсчитаем длину второй дороги. Она длиннее первой на 22 км. Значит S2 = S1+22 = 162+22 = 184 км.
V2 = V1 - 8 = 54 - 8 = 46 км/ч.
ну и осталось подсчитать время:
t2 = S1 : V1 = 184 : 46 = 4 ч.

Мотоциклисту на обратный путь понадобится 4 часа.

Я пишу так подробно, чтобы вы поняли, как решать такие задачки, а не просто списали. Поэтому просьба: постарайтесь понять действия, которые были произведены.

Answer 3

Calculation of the Distance and Time for the Initial Journey

To answer your question, let's first calculate the distance and time for the initial journey. The motorcyclist traveled a distance from one city to another in 3 hours, with a speed of 54 km/h.

Using the formula distance = speed × time, we can calculate the distance covered by the motorcyclist: - Distance = 54 km/h × 3 hours = 162 km.

Therefore, the motorcyclist traveled a distance of 162 km in 3 hours.

Calculation of the Distance and Time for the Return Journey

Now, let's calculate the time required for the motorcyclist to return, but on a different road that is 22 km longer than the initial road. Additionally, the motorcyclist's speed will be 8 km/h slower than before.

To find the time required for the return journey, we need to calculate the new distance and divide it by the new speed.

The new distance can be calculated by adding the additional 22 km to the initial distance: - New distance = 162 km + 22 km = 184 km.

The new speed is 8 km/h slower than the initial speed of 54 km/h: - New speed = 54 km/h - 8 km/h = 46 km/h.

Using the formula time = distance / speed, we can calculate the time required for the return journey: - Time = 184 km / 46 km/h = 4 hours.

Therefore, the motorcyclist will require 4 hours for the return journey on the longer road, with a speed of 46 km/h.

Summary

To summarize, the motorcyclist traveled a distance of 162 km in 3 hours at a speed of 54 km/h. For the return journey on a longer road that is 22 km longer, the motorcyclist will require 4 hours at a speed of 46 km/h.

I hope this answers your question! Let me know if you need any further clarification.