Question

Поезд путь от одной станции до другой прошел за 3,5 ч. со скоростью 70 км/ч . С какой скоростью должен был идти поезд, чтобы пройти этот путь за 4,9 ч ? Плиз даю 150 баллов!!???

Answer 1

1) 70*3,5=245 (км)- всё растояние .

2)257:4,9=50 (км/ч) - за 4,9 часов

Ответ:50 км/ч

Answer 2

1)3,5*70=245(км)-весь путь
2)245/4,9=2450/49=50(км)
Ответ:50 км.

Answer 3

Calculation of Speed

To determine the speed at which the train should have traveled to cover the distance in 4.9 hours, we can use the formula: Speed = Distance / Time.

Given that the train covered the distance in 3.5 hours with a speed of 70 km/h, we can calculate the distance using the formula: Distance = Speed x Time.

Let's calculate the distance covered by the train in 3.5 hours:

Distance = Speed x Time Distance = 70 km/h x 3.5 hours Distance = 245 km

Now, let's calculate the speed at which the train should have traveled to cover the same distance in 4.9 hours:

Speed = Distance / Time Speed = 245 km / 4.9 hours Speed = 50 km/h

Therefore, the train should have traveled at a speed of 50 km/h to cover the distance in 4.9 hours.

Please note that the calculations are based on the given information and assumptions of constant speed throughout the journey.