Question

Составь по данному чертежу задачу и реши ее. 60км/ч 80км/ч 420км

Answer 1

1)80+60=140(км\ч)-общая скорость.
2)420:140=3(ч)-время.
Ответ:3 часа время.

Answer 2

Problem Statement

Let's say there are two vehicles traveling at different speeds. One vehicle is traveling at a speed of 60 km/h, and the other is traveling at a speed of 80 km/h. The distance between them is 420 km. We need to determine how long it will take for the two vehicles to meet.

Solution

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

Let's denote the time it takes for the first vehicle to meet the second vehicle as t.

The distance traveled by the first vehicle in time t is given by: 60t.

The distance traveled by the second vehicle in time t is given by: 80t.

Since the total distance between the two vehicles is 420 km, we can set up the equation:

60t + 80t = 420

Simplifying the equation, we get:

140t = 420

Dividing both sides of the equation by 140, we find:

t = 420 / 140 = 3

Therefore, it will take 3 hours for the two vehicles to meet.

Answer

It will take 3 hours for the two vehicles traveling at speeds of 60 km/h and 80 km/h, respectively, to meet.