Question

Туристы были в пути 15часов. пятую часть этого времени они шли пешком, остальное время Плыли на теплоходе. Сколько времени они находились на теплоходе? Реши задачу двумя способами.

Answer 1

) 15/5=3-часа шли пешком туристы.2) 15-3=12-часов плыли на теплоходе.2 способ 1)5-1=4-части на теплоходе от всего пути.2)15/5=3-часа шли пешком.3)3*4=12-часов плыли.

Answer 2

1 способ.
1) 15 * 1/5 = 3 (ч);
2) 15 - 3 = 12 (ч);
2 способ.
1) 15 / 5 * 1 = 3 (ч);
2) 15 - 3 = 12 (ч);
Ответ: 12 ч.

Answer 3

Problem Analysis

The tourists were in transit for 15 hours. During one-fifth of this time, they were walking, and for the rest of the time, they were on a boat. We need to determine how much time they spent on the boat.

Solution 1: Using Proportions

Let's solve this problem using proportions. We know that the time spent walking is one-fifth of the total time, and the remaining time is spent on the boat. We can set up the following proportion:

Walking time / Total time = 1/5

Let's solve for the walking time:

Walking time = (1/5) * Total time

Now, we can find the time spent on the boat:

Boat time = Total time - Walking time

Solution 2: Using Algebra

Alternatively, we can solve this problem using algebra. Let's represent the total time as 'T', the walking time as 'W', and the boat time as 'B'. We know that the walking time is one-fifth of the total time:

W = (1/5) * T

We also know that the total time is the sum of the walking time and the boat time:

T = W + B

Now, we can substitute the value of 'W' from the first equation into the second equation:

T = ((1/5) * T) + B

Simplifying the equation, we get:

(4/5) * T = B

Therefore, the time spent on the boat is four-fifths of the total time.

Calculation

Let's calculate the time spent on the boat using both methods:

Solution 1: Using Proportions

Walking time = (1/5) * 15 hours = 3 hours

Boat time = 15 hours - 3 hours = 12 hours

Solution 2: Using Algebra

Boat time = (4/5) * 15 hours = 12 hours

Answer

The tourists spent 12 hours on the boat.

Please let me know if there is anything else I can help you with.