Question

В баке машины был бензин. В него залили ещё 12 л бензина. За время поездки была израсходована 1/5 часть всего бензина. Сколько бензина было в баке первоначально, если во время поездки израсходовали 10 л?

Answer 1

38+12=50
50=5/5
50-10(1/5)=40
Вот!

Answer 2

10*5=50
50-12=38 литров

Answer 3

Problem Analysis

We are given the following information: - The car initially had some amount of gasoline in the tank. - An additional 12 liters of gasoline were added to the tank. - During the trip, 1/5 of the total gasoline was consumed, which amounts to 10 liters.

We need to determine the initial amount of gasoline in the tank.

Solution

Let's assume the initial amount of gasoline in the tank is x liters.

According to the given information, the total amount of gasoline after adding 12 liters is x + 12 liters.

During the trip, 1/5 of the total gasoline was consumed, which amounts to 10 liters. This can be expressed as:

(1/5) * (x + 12) = 10

To find the initial amount of gasoline, we can solve this equation for x.

Calculation

Let's solve the equation:

(1/5) * (x + 12) = 10

Multiplying both sides by 5:

x + 12 = 50

Subtracting 12 from both sides:

x = 38

Answer

The initial amount of gasoline in the tank was 38 liters.

Please let me know if I can help you with anything else.