Question

Из двух пунктов,расстояние между которыми 7км 500м,одновременно в одном направлении вышел пешеход со скоростью 6 км/ч и выехал автобус.определите скорость автобуса, если он догнал пешехода через 15 мин.

Answer 1

 1) 6*0,25=1,5 км - прошёл пешеход
2)7,5+1,5=9 км - проехал автобус
3)9:0,25=36 км/ч - скорость автобуса

Answer 2

Problem Analysis

We are given that the distance between two points is 7 km 500 m. A pedestrian starts walking from one point with a speed of 6 km/h, and at the same time, a bus starts from the same point and catches up with the pedestrian after 15 minutes. We need to determine the speed of the bus.

Solution

Let's break down the problem step by step:

1. Convert the distance between the two points to a single unit (either km or m) for consistency. In this case, let's convert it to meters. - 7 km 500 m = 7,500 m.

2. Convert the pedestrian's speed from km/h to m/min, since we are given the time in minutes. - 6 km/h = 100 m/min.

3. Determine the time it takes for the bus to catch up with the pedestrian. We are given that the bus catches up with the pedestrian after 15 minutes.

4. Use the formula: speed = distance / time to find the speed of the bus. - Speed of the bus = Distance / Time - Speed of the bus = 7,500 m / 15 min - Speed of the bus = 500 m/min.

Answer

The speed of the bus is 500 m/min.

Please let me know if I can help you with anything else.