Question

Помогите решить задачу !! Один вертолет был в пути на 3 ч больше другого. Первый вертолет пролетел 1400 км, а второй - 350 км. Сколько часов летал каждый вертолет, если их скорости были одинаковыми?

Answer 1

1400/350=4
3•4=12
Ответ :12ч,4ч

Answer 2

1400-350=1050 км больше был в пути первый вертолет
1050:3=350км в час скорость каждого вертолета
1400:350=4 часа был в пути 1 вертолет
350:350=1 час был в пути 2 вертолет
Ответ:4 часа,1 час.

Answer 3

Problem Analysis

We are given two helicopters, one of which flew for 3 hours longer than the other. The first helicopter flew a distance of 1400 km, while the second helicopter flew a distance of 350 km. We need to find the duration of the flight for each helicopter, assuming they had the same speed.

Solution

Let's assume the speed of both helicopters is v km/h.

The first helicopter flew for t hours, and the second helicopter flew for t + 3 hours.

We can use the formula distance = speed × time to set up two equations:

For the first helicopter: 1400 = v × t For the second helicopter: 350 = v × (t + 3) To solve this system of equations, we can substitute the value of v × t from equation into equation:

350 = (1400/t) × (t + 3)

Simplifying the equation:

350 = 1400 + 4200/t

Rearranging the equation:

4200/t = 1050

Cross-multiplying:

4200 = 1050t

Solving for t:

t = 4200/1050 = 4

Now that we have the value of t, we can substitute it back into equation to find the speed v:

1400 = v × 4

Simplifying the equation:

v = 1400/4 = 350

Therefore, both helicopters flew for 4 hours, and their speed was 350 km/h.

Answer

Each helicopter flew for 4 hours, and their speeds were both 350 km/h.