Question

Две телеги одновременно выехали из деревни в противоположных направлениях. Через 2ч расстояние между ними стало равно 40км. Найди скорость первой телеги, если скорость второй телеги 12км/ч.

Answer 1

12*2=24 км проехала вторая телега
40-24=16 км проехала первая телега
16:2=8 км/ч скорость первой телеги

Answer 2

Problem Analysis

We have two carts that start from a village and move in opposite directions. After 2 hours, the distance between them is 40 km. We need to find the speed of the first cart, given that the speed of the second cart is 12 km/h.

Solution

Let's assume the speed of the first cart is x km/h.

After 2 hours, the first cart would have traveled a distance of 2x km, and the second cart would have traveled a distance of 12 * 2 = 24 km.

The sum of the distances traveled by both carts should be equal to the distance between them, which is 40 km.

So, we can set up the equation: 2x + 24 = 40.

Now, let's solve this equation to find the value of x.

Calculation

2x + 24 = 40

Subtract 24 from both sides: 2x = 40 - 24 2x = 16

Divide both sides by 2: x = 16 / 2 x = 8

Answer

The speed of the first cart is 8 km/h.