Question

Усвейка и Свечанка- притоки Уллы. Длина Усвейки-116км, и это составляет 29/21 длины Свечанки,а длина Уллы равна 41/28 длины Свечанки. Найдите длины Уллы и Свечанки

Answer 1

116:29*21=84 км длина реки Свечанки

84:28*41=123 км длина реки Уллы

Answer 2

Calculating the Lengths of Usvyeka, Svechanka, and Ulla

To calculate the lengths of Usvyeka, Svechanka, and Ulla, we can use the given information about their relationships.

Given: - Length of Usvyeka = 116 km - Length of Usvyeka is 29/21 of the length of Svechanka - Length of Ulla is 41/28 of the length of Svechanka

Let's denote the length of Svechanka as x.

According to the given information: - Length of Usvyeka = 116 km - Length of Usvyeka = (29/21) * Length of Svechanka - Length of Ulla = (41/28) * Length of Svechanka

We can use these relationships to calculate the lengths of Svechanka and Ulla.

Calculations

First, let's calculate the length of Svechanka:

Length of Svechanka = (21/29) * Length of Usvyeka

Length of Svechanka = (21/29) * 116 km

Length of Svechanka = 84 km

Now, let's calculate the length of Ulla:

Length of Ulla = (41/28) * Length of Svechanka

Length of Ulla = (41/28) * 84 km

Length of Ulla = 123 km

Conclusion

Based on the given information, the lengths of the rivers are as follows: - Length of Svechanka: 84 km - Length of Ulla: 123 km