SOLUTION: please help! Sir Robbin has covered 15951 miles in the service of King Arthur. He notices that this number is a palindrome. He continues riding and 4 hours later the total number

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Question 764172: please help!
Sir Robbin has covered 15951 miles in the service of King Arthur. He notices that this number is a palindrome. He continues riding and 4 hours later the total number of miles he has ridden is another palindrome. At what speed did he ride?
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
He has to travel over 1000 mph to change the first digit. That seems ridiculous. So the first digit is a one, which means the last digit is a 1.


He has to travel 100 miles to maintain the 5 in the ten's digit. That changes the thousand's digit to a 6: 16051. Change the ten's digit to a 6 with 10 more: 16061.


It took 110 to create the palindrome. 110/4 = 27.5 mph.