If Phil has one-third of the amount that Bob does, that means he has $60/3= $<<60/3=20>>20 in his account.
Since Jenna has twice as much money as Phil, that means she has $20*2= <<20*2=40>>40 in her account.
Since Bob has $60 in his account, that means he has $60-$40=$<<60-40=20>>20 more than Jenna.
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