A person is standing along with his bike near to a milestone. A two digit number was on the milestone. He started driving the bike with constant speed for an hour then found an another milestone with a number on it which is opposite to the number of first milestone. He again travelled for an hour with the same constant speed then he found another milestone with a number which is same as the first milestone but with a zero in middle of that number.
Find the speed and numbers on the milestone.??