Question

Решите задачу плииз. В 8 часов расстояние между двумя катерами плывущими на встречу друг другу было 250. Скорости катеров 25 км/ч и 35км/ч. Встретятся ли они до 12ч этого же дня? Через сколько времени произойдет встреча? (ответ вырази сначала в часах а потом в часах и минутах)

Answer 1

25+35=60км/ч,

250/60=4ч17мин,

8+4ч17ин=12ч17мин -не встретятся

Answer 2

1)12-8=4(ч)катера в пути с 8 до 12
2)25*4=100(км) первый катер за 4ч
3)35*4=140(км) второй катер за 4ч
4)100+140=240(км) проедут оба до 12ч-не встретятся
5)35+25=60(км.ч)общая скорость
6)250:60=4,(одна шестая ) (часа)-встретятся
7)4,(одна шестая ) (часа)=4ч.10мин.-потратят до встречи
Ответ: До 12ч. не встретятся, через 4ч.10мин. произойдёт встреча

Answer 3

Problem Analysis

We are given two boats traveling towards each other. The distance between them at 8 o'clock is 250 km. The speeds of the boats are 25 km/h and 35 km/h. We need to determine if they will meet before 12 o'clock and, if so, at what time the meeting will occur.

Solution

To solve this problem, we can use the formula: time = distance / relative speed.

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

1. Relative speed = sum of the speeds of the two boats = 25 km/h + 35 km/h = 60 km/h. 2. Time = distance / relative speed = 250 km / 60 km/h.

Now, let's calculate the time in hours and minutes:

3. Time in hours = quotient of the division = 4 hours. 4. Time in minutes = remainder of the division * 60 = (250 km % 60 km/h) * 60.

Therefore, the boats will meet before 12 o'clock, and the meeting will occur 4 hours and (250 km % 60 km/h) * 60 minutes from 8 o'clock.

Let's calculate the remaining minutes:

5. 250 km % 60 km/h = 10 km. 6. Remaining minutes = 10 km * 60 minutes/km = 600 minutes.

Answer

The boats will meet before 12 o'clock, and the meeting will occur 4 hours and 600 minutes (or 10 hours) from 8 o'clock.

Therefore, the boats will meet at 12:10 PM.

Please let me know if you need any further assistance.