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Driving along a highway, Megan noticed that her odometer showed 15951 (miles). This number is a palindrome-it reads the same forward and backward. Then 2 hours later, the odometer displayed the next higher palindrome. What was her average speed, in miles per hour, during this 2-hour period?

 May 11, 2022
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The next palindrome ==16061

 

16061 - 15951 ==110 miles driven in 2 hours.

 

Average speed ==110 / 2==55 mph - her average speed for the 2-hour drive.

 May 11, 2022

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