Question

Из города на встречу друг другу выехали два поезда они проехали 12000 км и встретились через 18 часов скорость 1 поезда 120 км в час нужно найти скорость второго поезда

Answer 1

Вычисли сколько прошёл 1 поезд
120*18=2160 км
значит 2 прошёл-9840
9840:18=546 2/3 км/ч-скорость 2 поезда

Answer 2

Problem Analysis

Two trains start from different cities and travel towards each other. They meet after traveling a total distance of 12,000 km in 18 hours. The speed of one train is given as 120 km/h. We need to find the speed of the second train.

Solution

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

We know that the total distance traveled by both trains is 12,000 km, and the time taken to meet is 18 hours.

Using the formula distance = speed × time, we can set up the following equation:

Distance traveled by the first train + Distance traveled by the second train = Total distance

120 km/h × 18 hours + x km/h × 18 hours = 12,000 km

Simplifying the equation:

2160 km + 18x km/h = 12,000 km

18x km/h = 12,000 km - 2160 km

18x km/h = 9840 km

Dividing both sides of the equation by 18 km/h:

x km/h = 9840 km / 18 km/h

Calculating the value of x:

x = 546.67 km/h

Therefore, the speed of the second train is approximately 546.67 km/h.

Answer

The speed of the second train is approximately 546.67 km/h.