Question

В электрички не разрешали возить собак, и Костя с Мишкой везли Дружка в город в чемодане. Электричка шла 1ч 45мин.Дружок ехал молча 1 пятых часть всего времени, а потом начал скулить.Чтобы заглушить голос щенка, Мишка 1 третих оставшегося времени читал стихи, а после него до конца пути Костя пел песни.Сколько времени Костя пел песни?

Answer 1

1.1ч 45 мин = 60+45 =105 (мин) время в пути в минутах

2. 105:5=21 (мин) - время которое Дружок молчал

3. 105-21=84 (мин) - Дружок скулил

4. 84:3=28 (мин) - Мишка читал стихи

5. 84-28=56 (мин) - Коля пел песни

 

 

Answer 2

1ч45мин=105мин

105:5=21(мин)-ехал молча

105-21=84(мин)-осталось время

84:3=28(мин)-Мишка читал стихи

105-21-28=56(мин)-костя пел песни 

 

Answer 3

Traveling with a Dog in a Train

According to the information provided, Kostya and Mishka were transporting their dog, Druzhok, in a suitcase on a train journey. It is mentioned that dogs were not allowed on the train, so they had to find a way to keep Druzhok hidden during the trip. The train journey lasted for 1 hour and 45 minutes.

Druzhok's Behavior during the Journey

Druzhok remained silent for 1/5th of the total time of the journey. However, after that, he started whimpering. To quiet the puppy, Mishka spent 1/3rd of the remaining time reading poems. After Mishka finished reading, Kostya took over and sang songs for the rest of the journey.

Calculating the Time Kostya Sang Songs

To determine how much time Kostya spent singing songs, we need to calculate the remaining time after Druzhok started whimpering and after Mishka finished reading poems.

1. Total journey time: 1 hour and 45 minutes 2. Druzhok remained silent for 1/5th of the total time: (1/5) * (1 hour and 45 minutes) 3. Remaining time after Druzhok started whimpering: Total journey time - Druzhok's silent time 4. Mishka spent 1/3rd of the remaining time reading poems 5. Remaining time after Mishka finished reading: Remaining time after Druzhok started whimpering - (1/3) * (Remaining time after Druzhok started whimpering)

Let's calculate the time Kostya spent singing songs:

1. Convert the total journey time to minutes: 1 hour and 45 minutes = 105 minutes 2. Calculate Druzhok's silent time: (1/5) * 105 minutes = 21 minutes 3. Calculate the remaining time after Druzhok started whimpering: 105 minutes - 21 minutes = 84 minutes 4. Calculate the time Mishka spent reading poems: (1/3) * 84 minutes = 28 minutes 5. Calculate the remaining time after Mishka finished reading: 84 minutes - 28 minutes = 56 minutes

Therefore, Kostya spent 56 minutes singing songs for the rest of the journey.