Question

Пловец спрыгнул с лодки и поплыл к берегу. Чеорез 3 минуты он проплыл 3|5 расстояния до берега. Сколько времени ему осталось плать,если скорость его движения не изменится???

Answer 1

1-3/5=2/5 - часть, которую осталось проплыть

3 мин - 3/5

х мин - 2/5

3/5х=3*2/5

3/5х=6/5

3х*5=6*5

3х=6

х=2 (мин.) - столько времени ему осталось плыть

Answer 2

3/5 s - 3 минуты

1 - всё расстояние

 

3/5 x S = 3 x v

S = T х v

 

Заменяем в первом равенстве S, получаем : 3/5 х T x v = 3 x v

Сокращаем v и 3, получаем T/5 = 1 или T = 5 минут

Осталось плыть 5-3 = 2 минуты

 

 

 

 

 

 

Answer 3

Problem Analysis

A swimmer jumps off a boat and swims towards the shore. After 3 minutes, the swimmer has covered 3/5 of the distance to the shore. We need to determine how much time is left for the swimmer to reach the shore if their speed remains constant.

Solution

Let's assume that the total distance from the boat to the shore is represented by d. After 3 minutes, the swimmer has covered 3/5 of the distance, which is equal to (3/5) * d.

To find out how much time is left for the swimmer to reach the shore, we need to calculate the remaining distance and divide it by the swimmer's speed.

The remaining distance can be calculated by subtracting the distance covered in 3 minutes from the total distance: remaining distance = d - (3/5) * d

Since the swimmer's speed remains constant, we can use the formula speed = distance / time to calculate the time required to cover the remaining distance: time = remaining distance / speed

Let's calculate the remaining time for the swimmer to reach the shore.

Calculation

Given: - Distance covered in 3 minutes = (3/5) * d

To find the remaining distance: remaining distance = d - (3/5) * d

To find the remaining time: time = remaining distance / speed

Since we don't have the specific values for the distance or the swimmer's speed, we can't calculate the exact time remaining. However, we can provide a general formula that can be used with any values.

General Formula

remaining time = (d - (3/5) * d) / speed

Please provide the specific values for the distance and the swimmer's speed, and I will be happy to calculate the remaining time for you.