Question

Два велосипедиста выехали из одного пункта в противоположных направлениях. Скорость одного из них 15 км/ч , а скорость другого в 1 2/3 раза меньше. Через сколько времени расстояние между ними будет равно 48 км? Помогите, пожалуйста!!!!!

Answer 1

15*1 2/3=15*5/3=25 (км/ч) скорость другого
15 км/ч+25 км/ч=40 км/ч (скорость удаления)
48 км:40 км/ч=1,2 ч
Ответ: между ними будет 48 км через 1,2 часа (1 час 12 минут)

Answer 2

1) 15 *1 2/3=15*5/3=25 км /ч скорость второго
2) 15+25=40 км/ч скорость отдаления
3)  48:40=через 1,2 часа  расстояние между ними будет равно 48 км
или 1  целая 1/5 часа

Answer 3

Problem Analysis

We have two cyclists starting from the same point and moving in opposite directions. The speed of one cyclist is 15 km/h, while the speed of the other cyclist is 1 2/3 times slower. We need to find the time it takes for the distance between them to be 48 km.

Solution

Let's assume the speed of the slower cyclist is x km/h. According to the problem, the speed of the slower cyclist is 1 2/3 times slower than the speed of the faster cyclist. Therefore, we can write the equation:

x = (1 2/3) * 15

To simplify the calculation, we can convert the mixed fraction to an improper fraction:

x = (5/3) * 15

Now, we can calculate the value of x:

x = (5/3) * 15 = 25 km/h

Now that we know the speeds of both cyclists, we can calculate the time it takes for the distance between them to be 48 km. We can use the formula:

time = distance / relative speed

The relative speed is the sum of the speeds of the two cyclists:

relative speed = 15 + 25 = 40 km/h

Substituting the values into the formula:

time = 48 / 40 = 1.2 hours

Therefore, it will take 1.2 hours for the distance between the two cyclists to be 48 km.

Answer

The time it will take for the distance between the two cyclists to be 48 km is 1.2 hours.