Question

Два велосипедиста едут на встречу друг к другу по шоссе со скоростями 14 км/ч и 18 км/ч. В 11 ч утра расстояние между ними было ровно 64 км. Успеют ли они встретиться до 13 ч 15 мин того же дня ?

Answer 1

14+18=32км/ч скорость сближения
64:32=2ч им понадобится 
13ч 15мин-11ч=2ч15мин у них есть
значит. им хватит времени, и ещё останется 15мин

Answer 2

13ч15м-11ч=2ч15м  -времени до встречи                                                     64 : ( 14+18)=64 :32 =2 ч   - проедут оставшееся расст        Ответ : успеют

Answer 3

Problem Analysis

Two cyclists are traveling towards each other on a highway at speeds of 14 km/h and 18 km/h. The initial distance between them is 64 km. We need to determine if they will meet before 1:15 PM on the same day.

Solution

To solve this problem, we can calculate the time it takes for the two cyclists to meet by dividing the initial distance between them by the sum of their speeds. If this time is less than 2 hours and 15 minutes (from 11:00 AM to 1:15 PM), then they will meet in time.

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

1. Calculate the relative speed of the two cyclists by adding their individual speeds: 14 km/h + 18 km/h = 32 km/h.

2. Calculate the time it takes for the two cyclists to meet by dividing the initial distance between them by their relative speed: 64 km / 32 km/h = 2 hours.

Since the calculated time is exactly 2 hours, we can conclude that the two cyclists will meet exactly at 1:00 PM. Therefore, they will meet before 1:15 PM, and the answer is yes, they will meet in time.

Conclusion

The two cyclists traveling towards each other on the highway at speeds of 14 km/h and 18 km/h will meet before 1:15 PM on the same day. They will meet exactly at 1:00 PM, which is within the given time frame.