Question

решите задачу : Велосипедист проехал весь путь сначала по грунтовой дороге, затем по асфальту за 65 мин.По асфальту он затратил времени на 17 мин меньше, чем по грунтовой дороге .Сколько минут велосипедист ехал по грунтовой дороге

Answer 1

65-17=48мин- потратил бы на весь путь, если бы затратил одинаковое время по грунтовой дороге и по асфальту
48:2=24мин- по асфальту
24+17=41мин- по грунтовой дороге

Answer 2

Problem Analysis

To solve this problem, we need to find the time the cyclist spent on the dirt road and the time spent on the asphalt road. We are given that the total time for the entire journey was 65 minutes, and the time spent on the asphalt road was 17 minutes less than the time spent on the dirt road.

Solution

Let's denote: - x as the time spent on the dirt road. - x - 17 as the time spent on the asphalt road.

Given that the total time for the entire journey was 65 minutes, we can form the equation: x + (x - 17) = 65

Solving for x: 2x - 17 = 65 2x = 65 + 17 2x = 82 x = 41

So, the cyclist spent 41 minutes on the dirt road.

Therefore, the cyclist spent 41 minutes on the dirt road and 24 minutes on the asphalt road.

Conclusion

The cyclist spent 41 minutes on the dirt road.