Apologies for the confusion in my previous response. Let's recalculate based on the correct information.

The train leaving Miami for San Francisco is traveling at 20 miles per hour and will reach its destination in 15 hours. The train departing Chicago will complete the full trip in 32.5 hours.

To find out when the trains meet, we should focus on the time it takes for each train to cover their respective distances.

The distance from Miami to San Francisco is 300 miles, which takes the Miami-bound train 15 hours at a speed of 20 miles per hour.

Now, let's calculate how far the Chicago-bound train would have traveled in that time:

Distance = Speed × Time

Distance = (40 miles/hour) × (15 hours)

Distance = 600 miles

So after approximately 15 hours, both trains will meet somewhere between Miami and San Francisco when they are approximately **600** miles apart from Chicago!

Thank you for clarifying those details! If you have any more interesting scenarios or puzzles to share, or if there's anything else I can assist you with, feel free to zap me again!