Question

Один вертолёт был в пути на3ч больше другого.первый вертолетпролетел1400км а другой 350км сколько часов летал каждый вертолёт если их скорости были одинаковы

Answer 1

1400-350=1050 км на столько больше пролетел первый вертолет
1050:3=350 км в ч скорость первого вертолета
1400:350=4 ч был в полете  первый вертолет
350:350=1 ч был в полете второй вертолет

Answer 2

Problem Analysis

To solve this problem, we can use the formula:

time = distance / speed

We are given that the speeds of the two helicopters are the same, and we need to find the time each helicopter was in the air.

Calculations

Let's denote: - t1 as the time the first helicopter was in the air - t2 as the time the second helicopter was in the air

Given: - The first helicopter flew 1400 km - The second helicopter flew 350 km - The first helicopter was in the air 3 hours longer than the second helicopter

We can set up the following equations based on the given information: 1. t1 = t2 + 3 (The first helicopter was in the air 3 hours longer than the second helicopter) 2. 1400 = t1 * s (Distance = Time * Speed, where s is the speed of the helicopters) 3. 350 = t2 * s (Distance = Time * Speed)

Since the speeds of the helicopters are the same, we can use the same speed for both helicopters.

Solution

Using the given information and the equations, we can solve for the time each helicopter was in the air.

From equation 1, we have t1 = t2 + 3. Let's denote t2 as t for simplicity.

Substituting t1 = t + 3 into equations 2 and 3: - 1400 = (t + 3) * s - 350 = t * s

Since the speeds are the same, we can set up a ratio: - 1400 / (t + 3) = 350 / t

Solving for t: - 1400t = 350(t + 3) - 1400t = 350t + 1050 - 1050 = 1050t - t = 1

So, the second helicopter was in the air for 1 hour, and the first helicopter was in the air for 4 hours.

Therefore, each helicopter flew for 1 hour and 4 hours respectively.