Question

Когда автомобиль проехал 0,2, а затем еще 0,15 всего пути, то оказалось, что он проехал на 18 км меньше половины пути, которые требовалось проехать. Сколько километров должен был проехать автомобиль?

Answer 1

1) 0,2 + 0,15 = 0,35 пути автомобиль проехал
2) половина пути = 0,5
   0,5 - 0,35 = 0,15 пути составляют 18км
3) 18 : 0,15 = 120(км)
Ответ: 120км должен проехать автомобиль.
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Проверим:
120 * 0,35 = 42(км) проехал
42 + 18 = 60(км) - это середина всего пути
60 + 60 = 120(км) - весь путь
Всё верно.

Answer 2

Problem Analysis

We are given that a car traveled a distance of 0.2 km and then an additional distance of 0.15 km, for a total distance traveled. It is also mentioned that the car ended up being 18 km less than half of the total distance it was supposed to travel. We need to find the total distance the car was supposed to travel.

Solution

Let's assume the total distance the car was supposed to travel is D km.

According to the given information, the car traveled a distance of 0.2 km and then an additional distance of 0.15 km, for a total distance traveled. This can be represented as:

0.2 + 0.15 = 0.35 km

It is also mentioned that the car ended up being 18 km less than half of the total distance it was supposed to travel. Mathematically, this can be represented as:

(0.5 * D) - 18 = 0.35

Let's solve this equation to find the value of D.

(0.5 * D) - 18 = 0.35

0.5 * D = 0.35 + 18

0.5 * D = 18.35

D = 18.35 / 0.5

D = 36.7 km

Therefore, the car was supposed to travel a distance of 36.7 km.

Answer

The car was supposed to travel a distance of 36.7 km.