Question

Расстояние между двумя посёлками автобус проезжает за 4часа со скоростью 30 км/ ч. С какой скоростью должен ехать автобус чтобы проехать это расстояние за 2 ч? реши задачу двумя способами

Answer 1

Дано:автобус
S-? км:
за 4 часа-30 км/ч
за 2 часа-? км/ч
Решение:
1-ый способ:
1) 4×30=120 (км/ч) S
2) 120:2=60 (км/ч) должен
Ответ: чтобы проехать это расстояние скорость автобуса должна быть 60 км/ч.

2-ой способ:
1) 4:2=2 (ч.) разница времени
2) 30×2=60 (км/ч) должен
Ответ: чтобы проехать это расстояние скорость автобуса должна быть 60 км/ч.

Answer 2

Task Solution:

To solve this problem, we can use two different methods: the formula for calculating speed and the formula for distance, speed, and time.

Method 1: Using the Formula for Calculating Speed

The formula for calculating speed is:

Speed = Distance / Time

Given that the distance between the two villages is 30 km and the time taken to cover this distance is 4 hours, we can calculate the speed using the given values:

Speed = 30 km / 4 hours = 7.5 km/h To find the speed required to cover the same distance in 2 hours, we can use the same formula:

Speed = Distance / Time

Speed = 30 km / 2 hours = 15 km/h So, the bus should travel at a speed of 15 km/h to cover the distance between the two villages in 2 hours.

Method 2: Using the Formula for Distance, Speed, and Time

The formula for distance, speed, and time is:

Distance = Speed × Time

Given that the distance between the two villages is 30 km and the time taken to cover this distance is 4 hours, we can calculate the speed using the given values:

Speed = Distance / Time

Speed = 30 km / 4 hours = 7.5 km/h To find the speed required to cover the same distance in 2 hours, we can rearrange the formula to solve for speed:

Speed = Distance / Time

Speed = 30 km / 2 hours = 15 km/h So, using both methods, we find that the bus should travel at a speed of 15 km/h to cover the distance between the two villages in 2 hours.