Question

решить задачу с помощью уравнения автотуристы в первый день ехали со скоростью 70 км ч 5:00 а во второй день несколько часов со скоростью 65 км ч всего они проехали 870 км сколько часов ехали туристы во второй день​

Answer 1

Пусть х-время в пути во второй день, тогда
70*5+65*х=870
65х=870-350
65х=520
х=8
Ответ: они ехали 8 часов

Answer 2

#### Problem Analysis To solve this problem, we need to find the number of hours the tourists traveled on the second day. We are given that on the first day, they traveled at a speed of 70 km/h for 5 hours, and on the second day, they traveled at a speed of 65 km/h for an unknown number of hours. The total distance traveled over the two days is 870 km. #### Solution Let's assume the number of hours the tourists traveled on the second day is **x**. On the first day, the distance traveled can be calculated using the formula: distance = speed * time. So, on the first day, the distance traveled is 70 km/h * 5 hours = 350 km. On the second day, the distance traveled is 65 km/h * x hours = 65x km. The total distance traveled over the two days is given as 870 km. Therefore, we can write the equation: 350 km + 65x km = 870 km. To solve for x, we can rearrange the equation: 65x km = 870 km - 350 km, 65x km = 520 km. Now, we can solve for x by dividing both sides of the equation by 65 km: x = 520 km / 65 km, x = 8 hours. #### Answer The tourists traveled for **8 hours** on the second day. #### Explanation On the first day, the tourists traveled at a speed of 70 km/h for 5 hours, covering a distance of 350 km. On the second day, they traveled at a speed of 65 km/h for 8 hours, covering a distance of 520 km. The total distance traveled over the two days is 870 km, as given in the problem statement. Therefore, the tourists traveled for 8 hours on the second day.