Question

Нужнакраткая запись к задиче.расстояние между причалами 24км.сколько времени потратит моторная лодка на путь от одного причала до другого и обратно если собственная скорость моторной лодки 10км/ч а скорость течения 2км/ч?

Answer 1

24:(10+2)=2(ч)
ответ: 2 часа

Answer 2

Calculation of Time Taken by Motorboat

To calculate the time taken by the motorboat to travel from one pier to another and back, we need to consider the distance between the piers, the speed of the motorboat, and the speed of the current.

Given: - Distance between the piers: 24 km - Speed of the motorboat: 10 km/h - Speed of the current: 2 km/h

To find the time taken by the motorboat for the entire round trip, we can divide the total distance by the effective speed of the motorboat, which is the difference between its speed and the speed of the current.

Let's calculate the time taken for each leg of the journey separately:

1. Time taken from one pier to the other: - Distance: 24 km - Effective speed of the motorboat: 10 km/h - 2 km/h = 8 km/h - Time taken = Distance / Speed = 24 km / 8 km/h = 3 hours

2. Time taken from the other pier back to the starting pier: - Distance: 24 km - Effective speed of the motorboat: 10 km/h + 2 km/h = 12 km/h - Time taken = Distance / Speed = 24 km / 12 km/h = 2 hours

To find the total time taken for the round trip, we add the time taken for each leg: 3 hours (one way) + 2 hours (return) = 5 hours

Therefore, the motorboat will take a total of 5 hours to travel from one pier to another and back, considering its own speed of 10 km/h and the speed of the current as 2 km/h.