To solve this problem, we need to determine the value of x, which represents the distance Samson's car can travel using ten liters of gasoline.
Let's break down the information given:
Distance from Samson's current town to the other town: 140 km
Amount of gasoline used for a distance of x km: 10 liters
Amount of gasoline needed for a one-way trip: 20 liters
We can set up the equation as follows:
Amount of gasoline used for a distance of x km / Distance from Samson's current town to the other town = Amount of gasoline needed for a one-way trip / Total distance
10 liters / x km = 20 liters / 140 km
Let's simplify and solve for x:
10/ x = 20/140
To cross multiply, we multiply both sides of the equation by x * 140:
10 * 140 = 20 * x
1400 = 20x
To isolate x, we divide both sides of the equation by 20:
1400 / 20 = x
70 = x
The value of x is 70.
#### 70
The answer is: 70
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Samson is going to another town which is 140 km away. He will use his car that uses ten liters of gasoline for a distance of x km. Samson will need 20 liters of gasoline for a one-way trip. What is the value of unknown variable x?

### Answer:
