Question

Теплоход за два дня был в пути 12часов.В первый день он прошел 100км пути,во второй -140км пути.Сколько часов теплоход был в пути каждый день,если он шел с одинаковой скоростью?

Answer 1

1. 140+100=240 (км)

2. 240/12=20(км/ч)

3. 100/20=5(ч) - 1 день

4. 140/20=7(ч) - 2 день

Ответ: 5часов и 7 часов.

 

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Answer 2

Calculation of Time Spent Each Day

To calculate the time spent by the ship each day, we need to divide the distance traveled by the speed of the ship. Since the ship traveled at a constant speed, we can assume that the speed remained the same on both days.

On the first day, the ship traveled 100 km, and on the second day, it traveled 140 km. To find the time spent each day, we need to divide the distance traveled by the speed of the ship.

Let's assume the speed of the ship is x km/h.

On the first day: - Distance traveled: 100 km - Time spent: 100 km / x km/h = 100/x hours

On the second day: - Distance traveled: 140 km - Time spent: 140 km / x km/h = 140/x hours

Since the ship spent a total of 12 hours in two days, we can set up the following equation:

100/x + 140/x = 12

To solve this equation, we can find a common denominator and combine the fractions:

(100 + 140)/x = 12

240/x = 12

Cross-multiplying, we get:

240 = 12x

Dividing both sides by 12, we find:

x = 240/12 = 20

Therefore, the speed of the ship is 20 km/h.

Now, we can substitute this value back into the equations to find the time spent each day:

On the first day: - Time spent: 100 km / 20 km/h = 5 hours

On the second day: - Time spent: 140 km / 20 km/h = 7 hours

So, the ship was in motion for 5 hours on the first day and 7 hours on the second day, assuming it traveled at a constant speed of 20 km/h.