Sam spends sixty minutes studying Science, eighty minutes in Math, and forty minutes in Literature.  How many hours does Sam spend studying the three subjects?
How many minutes does Sam spend studying the three subjects? ** The total number of minutes he studies the three subjects is 60 + 80 + 40 = <<60+80+40=180>>180 minutes.
How many hours does Sam spend studying the three subjects? ** Therefore, Sam spends 180/60 = <<180/60=3>>3 hours.
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