Question

Катер прошел с км,причём 1 пятых пути -по реке,а остальной путь по озеру .Сколько километров прошёл катер по озеру? (Записать вырожением!)

Answer 1

Возьмем все за 1,тогда
1-1/5=4/5-путь по озеру
с*4/5=4/5с(км)-прошел по озеру

Answer 2

The Question

A boat traveled x km, where 1/5 of the distance was along a river, and the rest along a lake. How many kilometers did the boat travel along the lake? (Write the solution as an expression!)

Breaking Down the Problem

The total distance traveled by the boat was x km. 1/5 of x km was along the river. To calculate the distance along the lake, we take the total distance and subtract the distance along the river.

The Solution

Let's call the distance along the river r. Then: r = x/5 (since 1/5 of the total distance was along the river) Distance along the lake = Total distance - Distance along the river = x - r = x - x/5 = 4x/5

So the expression for the distance traveled along the lake is: `4x/5`