Question

Из двух городов одновременно навстречу друг другу выехали два велосипедиста.Их скорости равны 11,5 км/ч и 13,5 км/ч.Через 0,8 часа расстояние между велосипедистами было 95,8 км.Найдите расстояние между городами.

Answer 1

1)11,5+13,5=25 (км\ч)- общая скорость2) 25*0,8=20(км)- проехали за 0,8 ч3) 20+95,8=115,8 (км)-между городами 

Answer 2

Problem Analysis

We have two cyclists who start simultaneously from two different cities and are moving towards each other. We are given the speeds of the two cyclists and the time it takes for them to meet. We need to find the distance between the two cities.

Solution

Let's denote the distance between the two cities as d.

We know that the speed of the first cyclist is 11.5 km/h and the speed of the second cyclist is 13.5 km/h.

We are given that after 0.8 hours, the distance between the two cyclists is 95.8 km.

To find the distance between the two cities, we can use the formula:

Distance = Speed x Time

Let's calculate the distance traveled by each cyclist in 0.8 hours:

- Distance traveled by the first cyclist = 11.5 km/h x 0.8 h = 9.2 km - Distance traveled by the second cyclist = 13.5 km/h x 0.8 h = 10.8 km

Since the two cyclists are moving towards each other, the sum of the distances traveled by both cyclists should be equal to the distance between them:

9.2 km + 10.8 km = 20 km

Therefore, the distance between the two cities is 20 km.

Answer

The distance between the two cities is 20 km.