A person drives with constant speed and after some time he sees a milestone with 2 digits. Then he travels for 1 hour and sees the same 2 digits in reverse order. 1 hour later he sees that the milestone has the same 2 digits with a 0 between them. What is the speed of the car (in mph)?
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hi xhkpjfxAWTIBX,'-4@3782287" 8
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