Tom has only been getting 6 hours of sleep a day.  He increases that by 1/3.  How many hours of sleep does he get per night?
How many hours of sleep does Tom get per night? ** He increases his sleep by 6/3=<<6/3=2>>2 hour per night
How many hours of sleep does Tom get per night? ** So he now gets 6+2=<<6+2=8>>8 hours of sleep per night
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