while driving his basketball team to a tournament Mr Reinhart noticed his odometer read 21912km. Being a lover of mathematical curiosities he noticed this number was a palindrome. (a palindrome is a number that reads the same way forwards and backwards). Mr Reinhart said "I bet it will take a long time for that to happen again!" but just 105 minutes later he noticed his odometer was another palindrome! How fast was Mr. Reinhart driving during his part of his trip ? (PLEASE HELP)

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speed = distance/time
speed = 21912/(60*105)
speed=3.5km/s

how did u find the km from minutes ?

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