Question

Из населенного пункта в одном напрвлении одновременно выехали два велосепидиста.через 3 ч первый проехал 60 км,что состовляло 2/3 расстояния,которое проехал второй за то же время.найдите скорость второго велосепидиста

Answer 1

30 км/ч
это очень легко

Answer 2

Problem Analysis

Two cyclists start simultaneously from a point and travel for 3 hours. The first cyclist covers 60 km, which is 2/3 of the distance covered by the second cyclist in the same time. We need to find the speed of the second cyclist.

Solution

Let's assume the speed of the first cyclist is v1 and the speed of the second cyclist is v2.

We know that the first cyclist covers 60 km in 3 hours, which is 2/3 of the distance covered by the second cyclist in the same time. This can be represented by the equation:

v1 * 3 = (2/3) * v2 * 3

Simplifying the equation, we get:

v1 = (2/3) * v2

To find the speed of the second cyclist, we can substitute the value of v1 in terms of v2:

v2 = (3/2) * v1

Now, we need to find the value of v2.

Calculation

Let's calculate the value of v2 using the given information.

v2 = (3/2) * v1

Substituting the value of v1 as 60 km/h:

v2 = (3/2) * 60

v2 = 90 km/h

Answer

The speed of the second cyclist is 90 km/h.

Explanation

The first cyclist covers 60 km in 3 hours, which is 2/3 of the distance covered by the second cyclist in the same time. This means that the second cyclist covers a distance of 90 km in 3 hours, which gives us a speed of 90 km/h.