Question

Чтобы не опоздать на поезд,человек должен пройти 7 км отделяющих его от станции за 1.5 часа.Вначале он прошел 2.1 км за 27 минут.Успеет ли он на поезд идя с такой же скоростью?

Answer 1

1.5ч=90мин=7км
27мин=2.1
27 мин меньше 1/3, но мы округлим . 2.1*3=6.3, но все равно нам не хватит времени

Answer 2

Calculation of Time and Distance

To determine if the person will make it to the train on time, we need to calculate the time it takes for the person to cover the remaining distance of 4.9 km.

The person has already walked 2.1 km in 27 minutes. To find the speed at which they are walking, we can use the formula:

Speed = Distance / Time

Using the given values, we can calculate the speed:

Speed = 2.1 km / 27 min

To convert the time from minutes to hours, we divide by 60:

Speed = 2.1 km / (27 min / 60 min/h)

Simplifying the calculation:

Speed = 2.1 km / 0.45 h

Calculating the speed:

Speed = 4.67 km/h

Now that we know the speed, we can calculate the time it will take to cover the remaining distance of 4.9 km:

Time = Distance / Speed

Time = 4.9 km / 4.67 km/h

Calculating the time:

Time = 1.05 hours

Therefore, it will take approximately 1.05 hours (or 63 minutes) for the person to cover the remaining distance of 4.9 km.

Conclusion

Based on the calculations, the person will not make it to the train on time. They need 1.05 hours to cover the remaining distance, but they only have 1.5 hours in total.