This holiday weekend, Sandeep is going to Chicago to shop and see a baseball game. To avoid traffic, Sandeep decides to take the train. There is a proportional relationship between the time (in minutes) Sandeep spends riding the train, x, and the distance he travels (in miles), y.

The equation that models this relationship is y=1.5x.
How long does it take Sandeep to travel 18 miles on the train? Write your answer as a whole number or decimal.

To find out how long it takes Sandeep to travel 18 miles on the train, we can substitute 18 for y in the equation y=1.5x:

18 = 1.5x

Now, we can solve for x:

x = 18 / 1.5
x = 12

Therefore, it takes Sandeep 12 minutes to travel 18 miles on the train.