Question

Реши задачу.Вычисли и запиши ответ.Чтобы доехать на машине из дома до работы летом,Коля тратит четверть того времени, которое требуется ему на дорогу зимой. С какой средней скоростью едет Коля зимой,если летом средняя скорость равна 120 км/ч?Помогите пожалуйста моя дамашняя работа на завтра успеть надо

Answer 1

120:4=30 км/ч
Ответ:30 км/ч

Answer 2

Problem Analysis

To solve this problem, we need to find the average speed at which Kolya drives in winter, given that he spends a quarter of the time it takes him to drive in winter to commute from home to work in summer. We are also given that Kolya's average speed in summer is 120 km/h.

Solution

Let's assume that the time it takes Kolya to drive from home to work in winter is represented by t. According to the problem, Kolya spends a quarter of this time in summer, which is t/4.

We can use the formula for average speed, which is average speed = total distance / total time. Since the distance remains the same, we can calculate the average speed using the ratio of the times.

The time it takes Kolya to drive from home to work in summer is t/4, and the time it takes him to drive from home to work in winter is t. Therefore, the average speed in winter can be calculated as:

average speed in winter = distance / (t - t/4)

Simplifying the equation:

average speed in winter = distance / (3t/4)

Since we are given that the average speed in summer is 120 km/h, we can set up the following equation:

120 = distance / (3t/4)

To solve for the average speed in winter, we need to find the value of t.

Calculation

To calculate the value of t, we need additional information. Unfortunately, the problem statement does not provide any additional details or values. Therefore, it is not possible to calculate the average speed in winter without more information.

Please provide any additional information or values that may be missing from the problem statement, and I will be happy to help you further.