Question

Два туриста выехали навстречу друг другу один после другого через 3 часа. Через сколько часов после отъезда первого туриста они встретятся, если первый ехал со скоростью 10 км.ч, а второй со скоростью 12 км.ч., а расстояние между ними 140 км.

Answer 1

10км * 3 = 30км

140-30=110км

10км+12км=22км

110км:22км=5(часов) 

5ч +3 ч=8 час они встретятся

Answer 2

1)10*3=30км-проехал первый за 3 часа.

2)140-30=110км-оставшееся расстояние.

3)10+12=22км/ч-скорость сближения.

4)110:22+3=через 8 часов-они встретятся.

Answer 3

Problem Analysis

Two tourists are traveling towards each other. The first tourist travels at a speed of 10 km/h, while the second tourist travels at a speed of 12 km/h. The distance between them is 140 km. We need to determine how many hours after the departure of the first tourist they will meet.

Solution

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

Let's calculate the time it takes for each tourist to travel the distance between them:

- For the first tourist: time1 = distance / speed1 = 140 km / 10 km/h = 14 hours. - For the second tourist: time2 = distance / speed2 = 140 km / 12 km/h = 11.67 hours.

Since the second tourist started 3 hours after the first tourist, we need to subtract 3 hours from the time it takes for the second tourist to travel the distance.

So, the total time it takes for the second tourist to meet the first tourist after the departure of the first tourist is: time2 - 3 = 11.67 hours - 3 hours = 8.67 hours.

Therefore, the two tourists will meet approximately 8.67 hours after the departure of the first tourist.

Answer

The two tourists will meet approximately 8.67 hours after the departure of the first tourist.