Question

турист за два дня прошёл 45 км. в первый день он прошёл 2/5 пути. какое расстояние он прошёл во второй день ? решите задачу разными способами. можете одним ПЛИСССС

Answer 1

1)45*2/5=18(км)-в 1 день
2)45-18=27(км)-во 2 день
ответ:27км

Answer 2

I способ: 
45*2/5=18 километров - в первый день
45-18=27 километров - во второй день
II способ:
2/5=0,4
45*0,4=18 километров - в первый день
45-18=27 километров - во второй день
III способ:
Пусть х - второй день
Тогда первый день -2*5х
По условию задачи - весь путь равен 45 километров
Составим и решим уравнение:
х+2/5х=45
 2/5х =45
х=45:2/5
х=27

Answer 3

Solution 1: Using Proportions

To find the distance the tourist covered on the second day, we can use the information that he covered 2/5 of the total distance on the first day.

Let's denote the total distance as D and the distance covered on the second day as x.

According to the given information: - On the first day, the tourist covered 2/5 of the total distance, which is 2/5 * D. - Therefore, the distance left to cover after the first day is 3/5 * D.

Using the proportion: 2/5 * D = 45 km (distance covered on the first day) 3/5 * D = Distance left to cover

We can solve for D and then find the distance covered on the second day.

Solution 2: Using Subtraction

Another way to solve this problem is by subtracting the distance covered on the first day from the total distance.

Let's denote the total distance as D and the distance covered on the first day as d1.

According to the given information: - The tourist covered 45 km in two days, so the total distance is 45 km. - On the first day, the tourist covered 2/5 of the total distance, which is 2/5 * D.

We can then find the distance covered on the second day by subtracting the distance covered on the first day from the total distance.

Calculations

Let's calculate the distance covered on the second day using both methods.

Using Proportions

2/5 * D = 45 km 3/5 * D = 45 km * (5/2) 3/5 * D = 112.5 km

So, the distance left to cover after the first day is 112.5 km.

Using Subtraction

The distance covered on the first day: 2/5 * D = 45 km D = 45 km * (5/2) D = 112.5 km

So, the total distance is 112.5 km.

Therefore, the distance covered on the second day is: D - 45 km = 112.5 km - 45 km = 67.5 km

So, the tourist covered 67.5 km on the second day.

Both methods yield the same result, which is 67.5 km covered on the second day.