Question

Автобус шел 3 ч со скоростью 57 км/ч , а потом,чтобы уложиться в расписание , оставшиеся 4ч двигался,увеличив скорость на 7 км/ч .Какова протяженность автоьусного маршрута ?

Answer 1

3*57+4*(57+7)=427(км)

Answer 2

Calculation of the Total Distance Traveled by the Bus

To calculate the total distance traveled by the bus, we need to consider two different segments of the journey: the first segment where the bus traveled for 3 hours at a speed of 57 km/h, and the second segment where the bus traveled for the remaining 4 hours at a speed increased by 7 km/h.

Let's calculate the distance traveled in each segment and then add them together to find the total distance.

First Segment: - Time: 3 hours - Speed: 57 km/h

To calculate the distance traveled in the first segment, we can use the formula: distance = speed × time.

Distance in the first segment = 57 km/h × 3 hours = 171 km.

Second Segment: - Time: 4 hours - Speed: increased by 7 km/h

To calculate the distance traveled in the second segment, we need to find the new speed after increasing it by 7 km/h. The new speed would be 57 km/h + 7 km/h = 64 km/h.

Distance in the second segment = 64 km/h × 4 hours = 256 km.

Total Distance: To find the total distance traveled by the bus, we add the distances traveled in the first and second segments.

Total distance = Distance in the first segment + Distance in the second segment = 171 km + 256 km = 427 km.

Therefore, the total distance of the bus route is 427 kilometers.

Please note that the sources provided did not directly answer the specific question about the bus route. The calculation above is based on the given information and does not rely on the provided sources.