Question 1194491

There are two trains. The rabbit heads north on the expressway at 45kph.
Exactly 12 minutes after, Panther follows at a steady speed of 54kph. How
long does it take Panther to overtake the Rabbit? 
Please Include Represent, Relate, Equate, Solve and Prove. Thank you!
<pre>He's wrong! 

<font color = blue><font size = 4><b>One (1) hour</font></font></b> after Panther leaves, it'll overtake Rabbit.</pre>