Question

Туристы плыли 5 часов на плоту по реке со скоростью 6 км/ч. обратно возвращались на моторной лодке со скоростью 15 км/ч. сколько времени затратили туристы на обратный путь? Из двух городов навстречу друг другу выехали два всадник. Первый всадник двигался со скоростью 28 км/ч и проехал 112 км. Сколько проехал второй всадник если он ехал со скоростью 23 км/ч?

Answer 1

1)24+20+18=62(км)-проплыли за 3 дня.                                                                       2)62/31=2(км/ч)-скорость за 1 час.                                                                               3)24/2=12(ч)-в 1 день.                                                                                               4)20/2=10(ч)-во 2 день.                                                                                             5)18/2=9(ч)-в 3 день.                                                                                                               Ответ:в1 день 12 час, во 2 день 10 час, в 3 день 9 час.    

Answer 2

Calculating Time Spent on the Return Journey

To calculate the time spent on the return journey, we can use the formula: time = distance / speed.

The distance traveled by the tourists on the return journey is the same as the distance traveled on the outbound journey. Let's denote the distance as "d".

The time spent on the outbound journey is: time_outbound = distance / speed = d / 6.

The time spent on the return journey is: time_return = distance / speed = d / 15.

Since the distance is the same for both journeys, we can equate the two time expressions: d / 6 = d / 15.

Solving for "d": d = 6 * 15 = 90 km.

Now, we can calculate the time spent on the return journey: time_return = distance / speed = 90 / 15 = 6 hours.

So, the tourists spent 6 hours on the return journey.

Solving the Horseback Riding Problem

For the second problem, we can use the formula: distance = speed * time.

The first horseback rider traveled at a speed of 28 km/h and covered a distance of 112 km. Let's denote the distance traveled by the second rider as "d2" and their speed as 23 km/h.

Using the formula, we can find the distance traveled by the second rider: d2 = speed * time = 23 * t.

We know that the time taken by both riders is the same, as they started at the same time and met each other. Therefore, we can equate the distances traveled by both riders: 28 * t = 112.

Solving for "t": t = 112 / 28 = 4 hours.

Now, we can find the distance traveled by the second rider: d2 = 23 * 4 = 92 km.

So, the second horseback rider traveled 92 km.

If you have further questions or need additional assistance, feel free to ask!