Question

Баржа шла сначала 3ч со скоростью 20 км/ч,а потом прошла ещё 2 ч. С какой скоростью баржа пройдёт оставшийся путь, если всего она прошла 92 км?

Answer 1

3*20=60 км-прошла сначала
92-60=32 км-оставшийся путь
32/2=16 км/ч -скорость на оставшемся пути

Answer 2

Problem Analysis

We are given that a barge traveled for 3 hours at a speed of 20 km/h and then traveled for an additional 2 hours. We need to find the speed at which the barge will cover the remaining distance if it has traveled a total of 92 km.

Solution

To find the speed at which the barge will cover the remaining distance, we can use the formula:

Speed = Distance / Time

Let's calculate the distance covered in the first 3 hours:

Distance1 = Speed1 * Time1 = 20 km/h * 3 hours = 60 km

Now, let's calculate the distance covered in the next 2 hours:

Distance2 = Speed2 * Time2

We know that the total distance covered is 92 km, so we can write:

Total Distance = Distance1 + Distance2 = 92 km

Substituting the values, we have:

60 km + Distance2 = 92 km

Simplifying the equation, we find:

Distance2 = 92 km - 60 km = 32 km

Now, we can calculate the speed at which the barge will cover the remaining distance:

Speed2 = Distance2 / Time2 = 32 km / 2 hours = 16 km/h

Therefore, the barge will cover the remaining distance at a speed of 16 km/h.

Answer

The barge will cover the remaining distance at a speed of 16 km/h.