Question

ПРОШУ НАПИШИТЕ ТАБЛИЦУ К ЗАДАЧЕ!! До привалу туристи пливли на байдарці 2 год, а після привалу — 4 год. Скільки кілометрів подолали туристи до привалу і скільки — після, якщо вони рухалися з однаковою швидкістю, а після привалу пропливли на 10 км більше?

Answer 1

Ответ:

Відповідь а можна 2 шляхами

Answer 2

Problem Analysis

We are given that tourists paddled on a kayak for 2 hours before taking a break, and then paddled for 4 hours after the break. We need to determine the distance covered by the tourists before the break and after the break, assuming they paddled at the same speed and covered 10 km more after the break.

Solution

Let's assume the distance covered by the tourists before the break is x kilometers. Since they paddled for 2 hours at the same speed, we can use the formula distance = speed × time to find the distance covered before the break:

x = speed × 2 ---(1)

Similarly, let's assume the distance covered by the tourists after the break is y kilometers. Since they paddled for 4 hours at the same speed and covered 10 km more, we can use the formula distance = speed × time to find the distance covered after the break:

y = speed × 4 + 10 ---(2)

We have two equations (1) and (2) with two unknowns (x and y). We can solve these equations simultaneously to find the values of x and y.

Solving the Equations

To solve the equations, we can use the method of substitution. We can rearrange equation (1) to solve for speed:

speed = x / 2 ---(3)

Substituting equation (3) into equation (2), we get:

y = (x / 2) × 4 + 10

Simplifying the equation:

y = 2x + 10 ---(4)

Now we have two equations: (3) and (4). We can substitute equation (3) into equation (4) to solve for x:

y = 2x + 10

x / 2 = 2x + 10

Simplifying the equation:

x = -20

Substituting the value of x back into equation (3), we can find the value of speed:

speed = -20 / 2

speed = -10

Since distance and speed cannot be negative in this context, we can conclude that there is no valid solution to this problem.

Conclusion

Based on the given information, there is no valid solution to the problem. The negative values obtained for distance and speed indicate that the problem is not feasible.