To solve this problem, we need to determine the value of x, which represents the time it takes for the train to travel 1 mile.
We know that the train travels 1 mile in X minute 30 seconds. Let's convert X minute 30 seconds into minutes:
X minute 30 seconds = X + 30/60 minutes = X + 0.5 minutes
So, the train travels 1 mile in X + 0.5 minutes.
We also know that the train will travel 40 miles in 1 hour, which is equal to 60 minutes.
We can set up the equation as follows:
(X + 0.5) minutes per 1 mile = 60 minutes per 40 miles
(X + 0.5)/1 = 60/40
(X + 0.5) = 1.5
To isolate X, we subtract 0.5 from both sides of the equation:
(X + 0.5) - 0.5 = 1.5 - 0.5
X = 1
The value of X is 1.
The answer is: 1
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
A freight train travels 1 mile in X minute 30 seconds. At this rate, The train will travel 40 miles in 1 hour. What is the value of unknown variable X?

### Answer:
