Question

Из двух населенных пунктов , расстояние между которыми 60 км , настречу друг другу выехали одновременно два велосипедиста . Скорость первого велосипедиста 12 км /ч . Через 1 2/3 часа они встретились . Определите скорость второго велосипедиста

Answer 1

Ответ:

Пошаговое объяснение:

12×5/3=20км проехал 1 велосипедист

60-20=40км проехал 2 велосипедист

40÷5/3=40×3/5=24км/час скорость 2 велосипедиста

Answer 2

Problem Analysis

We have two cyclists who start from two different towns simultaneously and meet after a certain amount of time. We are given the distance between the towns and the speed of one cyclist. We need to determine the speed of the second cyclist.

Given Information

- Distance between the towns: 60 km - Speed of the first cyclist: 12 km/h - Time taken for the cyclists to meet: 1 2/3 hours

Solution

Let's assume the speed of the second cyclist is x km/h.

To find the speed of the second cyclist, we can use the formula:

Speed = Distance / Time

The time taken for the cyclists to meet is given as 1 2/3 hours, which can be converted to a mixed fraction as follows:

1 2/3 = 3/3 + 2/3 = 1 + 2/3 = 5/3 hours

Now, let's substitute the given values into the formula:

For the first cyclist: Speed of the first cyclist = 12 km/h

For the second cyclist: Speed of the second cyclist = x km/h

Distance between the towns = 60 km

Time taken for the cyclists to meet = 5/3 hours

Using the formula, we can set up the following equation:

12 km/h = 60 km / (5/3) hours

To solve for x, we can cross-multiply and solve for x:

12 km/h * (5/3) hours = 60 km

(12 * 5) km = 60 km * 3

60 km = 180 km

Therefore, the speed of the second cyclist is 180 km/h.

Answer

The speed of the second cyclist is 180 km/h.