Question

В 8 ч расстояние между 2 катерами, плывущими навстречу друг другу, было 250 км. Скорости катеров 25 км/ч и 35 км/ч. Встретятся ли они до 12 часов того же дня? Через сколько времени произойдёт встреча? (Ответ вырази сначала в часах, а затем в часах и минутах.)

Answer 1

1) 25+35=60 км/ч скорость сближения
2)12-8=4 ч время движения
3)4*60=240 км-расстояние , которое проплывут катера за 4 часа
240км<250 км-они не встретятся
4)250:60=4цел 10/60=4 цел 1/6 часа=через 4 часа 10 мин они встретятся
Ответ: они встретятся через 4 часа 10 мин(встретятся в 12 часов 10 мин)

Answer 2

Problem Analysis

We have two boats traveling towards each other, and we need to determine if they will meet before 12:00 PM on the same day. We are given the distance between the boats and their speeds. We need to calculate the time it takes for them to meet.

Solution

To solve this problem, we can use the formula: time = distance / relative speed. The relative speed is the sum of the speeds of the two boats.

Let's calculate the time it takes for the boats to meet:

1. Calculate the relative speed of the boats: relative speed = speed of boat 1 + speed of boat 2. 2. Calculate the time it takes for the boats to meet: time = distance / relative speed.

Let's perform the calculations:

1. The distance between the boats is given as 250 km. 2. The speed of boat 1 is 25 km/h. 3. The speed of boat 2 is 35 km/h.

Calculation

1. Relative speed = 25 km/h + 35 km/h = 60 km/h. 2. Time = 250 km / 60 km/h = 4.17 hours.

The boats will meet in approximately 4 hours and 10 minutes.

Answer

The boats will meet before 12:00 PM on the same day. The meeting will occur in approximately 4 hours and 10 minutes.