Question

два туристских отряда вышли навстреччу друг другу из двух населённых пунктов.один отряд двигался со скоростью 8 км/ч и прошёл до встречи 40 км. Второй отряд прошёл до встречи 45 км. Какова скорость второго отряда?

Answer 1

45:(40:8)=9 км в час

Answer 2

1) 40 : 8 = 5 часов 
2) 45 : 5 = 9 ( км\час) 
Ответ 9 км\час

Answer 3

Calculating the Speed of the Second Tourist Group

To calculate the speed of the second tourist group, we can use the formula:

Speed = Distance / Time

We know that the first group traveled 40 km and the second group traveled 45 km to meet each other. We also know the speed of the first group, which is 8 km/h.

Using the formula, we can calculate the time it took for the first group to meet the second group, and then use that time to calculate the speed of the second group.

Calculating the Time Taken for the First Group to Meet the Second Group

The time taken for the first group to meet the second group can be calculated using the formula:

Time = Distance / Speed

For the first group: - Distance = 40 km - Speed = 8 km/h

Using the formula, we find: Time taken for the first group to meet the second group = 40 km / 8 km/h = 5 hours

Calculating the Speed of the Second Group

Now that we know the time taken for the first group to meet the second group, we can calculate the speed of the second group using the distance traveled by the second group and the time calculated above.

For the second group: - Distance = 45 km - Time = 5 hours

Using the formula, we find: Speed of the second group = Distance / Time = 45 km / 5 hours = 9 km/h

Therefore, the speed of the second tourist group is 9 km/h.