Question

От пристани одновремено в противоположных напровлениях выехали две моторные лодки.через3часа растояние между ними 168км.какова скорость первой лодки если скорость второй 27км в час

Answer 1

168:3=56 (км/ч) скорость удаления или сумма скоростей
56-27=29 (км/ч)
Ответ: скорость первой 29 км/ч

Answer 2

1)168:3=56(км/ч)вся скорость
2)56-27=29(км/ч)
Ответ:скорость второй моторной лодки 29 км/ч.

Answer 3

Problem Analysis

We have two motorboats that start from a dock at the same time and travel in opposite directions. After 3 hours, the distance between them is 168 km. We are given the speed of the second boat, which is 27 km/h. We need to find the speed of the first boat.

Solution

Let's assume the speed of the first boat is x km/h.

After 3 hours, the first boat will have traveled a distance of 3x km, and the second boat will have traveled a distance of 3 * 27 km.

Since the total distance between the two boats is 168 km, we can set up the following equation:

3x + 3 * 27 = 168

Simplifying the equation:

3x + 81 = 168

Subtracting 81 from both sides:

3x = 87

Dividing both sides by 3:

x = 29

Therefore, the speed of the first boat is 29 km/h.