Question

Решение задачи:Из пункта А вышла грузовая машина со скоростью 56 км/ч, а через 1,5 часа вслед за ней выехала легковая машина со скоростью 77 км/ч.На каком расстоянии автомобили будут от пункта А в тот момент, когда легковая машина догонит грузовую???

Answer 1

56*1.5 =84 км тогда за какое то х время он догонит  77x=84+56x,21x=84 x=4 то  есть   через  4 часа  тогда  77*4=308 км  

Answer 2

Problem Analysis

We are given that a truck leaves point A with a speed of 56 km/h, and 1.5 hours later, a car leaves point A with a speed of 77 km/h. We need to find the distance from point A at the moment when the car catches up to the truck.

Solution

To solve this problem, we can use the formula: distance = speed × time.

Let's calculate the distance traveled by the truck in 1.5 hours: - Speed of the truck = 56 km/h - Time = 1.5 hours

Using the formula, we can calculate the distance traveled by the truck: distance_truck = speed_truck × time = 56 km/h × 1.5 hours.

Now, let's calculate the distance traveled by the car when it catches up to the truck. At this point, the car has been traveling for 1.5 hours longer than the truck. So, the time for the car is 1.5 hours.

Using the formula, we can calculate the distance traveled by the car: distance_car = speed_car × time = 77 km/h × 1.5 hours.

To find the distance from point A at the moment when the car catches up to the truck, we need to subtract the distance traveled by the truck from the distance traveled by the car: distance_from_A = distance_car - distance_truck.

Let's calculate the values:

- distance_truck = 56 km/h × 1.5 hours = 84 km - distance_car = 77 km/h × 1.5 hours = 115.5 km - distance_from_A = 115.5 km - 84 km = 31.5 km

Therefore, at the moment when the car catches up to the truck, the distance from point A is 31.5 km.

Answer

At the moment when the car catches up to the truck, the distance from point A is 31.5 km.