Tom goes to a combined undergrad and Ph.D. program.  It takes 3 years to finish the BS and 5 years to finish the Ph.D.  Tom finishes it in 3/4ths the time.  How long does it take for him to finish?
The program normally takes 3+5=<<3+5=8>>8 years
So he manages to finish in 8*3/4=<<8*3/4=6>>6 years
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