Question

За перший день туристи пройшли 15,7 км. що на 3,8 км більше, ніж за другий, i на 2,3 км менше, ніж за третій. Скільки кілометрів пройшли туристи за три днi?

Answer 1

Ответ:

Пошаговое объяснение:

1)

15,7-3,8=11,9 км  -второй день

2)

15,7+2,3=18 км - в третий день.

3)

15,7+11,9+18=45,6 км  - прошли     за три дня.

Answer 2

Calculating the Total Distance Traveled by Tourists

To calculate the total distance traveled by the tourists over three days, we can use the information provided about the distances covered on each day.

Let's denote the distances covered on the first, second, and third days as D1, D2, and D3 respectively.

Given: - The tourists covered 15.7 km on the first day, which is 3.8 km more than the distance covered on the second day. - The distance covered on the first day is also 2.3 km less than the distance covered on the third day.

We can set up the following equations based on the given information: 1. D1 = D2 + 3.8 2. D1 = D3 - 2.3 3. D1 + D2 + D3 = Total distance covered

Solving for the Total Distance Covered

To solve for the total distance covered by the tourists over three days, we can use the information provided in the equations.

Substituting the value of D1 from equations (1) and (2) into equation (3), we get: D2 + 3.8 + D2 + D2 + 3.8 + 2.3 = Total distance covered

Simplifying the equation: 3D2 + 6.1 = Total distance covered

Given that the tourists covered 15.7 km on the first day, we can substitute this value into equation (1) to find the distance covered on the second day.

Calculating the Distance Covered on the Second Day

D2 = D1 - 3.8 D2 = 15.7 - 3.8 D2 = 11.9 km

Now, we can substitute the value of D2 into the equation for the total distance covered to find the total distance.

Calculating the Total Distance Covered

3D2 + 6.1 = Total distance covered 3(11.9) + 6.1 = Total distance covered 35.7 + 6.1 = Total distance covered 41.8 = Total distance covered

Conclusion

Therefore, the tourists covered a total distance of 41.8 kilometers over the three days.