Question

Из лагеря вышел отряд туристов и отправился к озеру со скоростью 5 км/ч, через 1,2ч вслед за ними выехал велосипедист со скорость 13км/ч , через какое время велосепидист догонит отряд

Answer 1

5*1,2=6 км прошол отряд

Answer 2

Problem Analysis

We are given that a group of tourists left a campsite and headed towards a lake at a speed of 5 km/h. After 1.2 hours, a cyclist left the campsite and started chasing the group at a speed of 13 km/h. We need to determine how long it will take for the cyclist to catch up with the group.

Solution

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

Let's assume that the distance between the campsite and the lake is d kilometers.

The group of tourists traveled for 1.2 hours at a speed of 5 km/h, so the distance they covered is: distance_group = speed_group * time_group = 5 km/h * 1.2 h = 6 km.

The cyclist started chasing the group after 1.2 hours and traveled at a speed of 13 km/h. The time it will take for the cyclist to catch up with the group is the same as the time it takes for the cyclist to cover the remaining distance between them and the group.

Let's calculate the remaining distance: remaining_distance = total_distance - distance_group = d - 6 km.

Now we can calculate the time it will take for the cyclist to catch up with the group: time_cyclist = remaining_distance / speed_cyclist = (d - 6 km) / 13 km/h.

Therefore, the cyclist will catch up with the group after time_cyclist hours.

Answer

The cyclist will catch up with the group after (d - 6 km) / 13 km/h hours.

Please note that the exact value of the time it will take for the cyclist to catch up with the group depends on the distance between the campsite and the lake (d), which is not provided in the given information.