He was driving 150/2=<<150/2=75>>75 mph

So he was 75-60=<<75-60=15>>15 mph above the speed limit

# Answer

15
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
John travels 150 miles in 2 hours.  The speed limit is 60 mph.  How many mph above the speed limit was he driving?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
15
John travels 150 miles in 2 hours.  The speed limit is 60 mph.  How many mph above the speed limit was he driving?
train