human
John has just turned 39. 3 years ago, he was twice as old as James will be in 6 years. If James' older brother is 4 years older than James, how old is James' older brother?
assistant
How old was John 3 years ago? ** John was 39-3=<<39-3=36>>36 years old 3 years ago
How old will James be in 6 years? ** So that means in 6 years James will be 36/2=<<36/2=18>>18 years old
How old is James right now? ** So right now James is 18-6=<<18-6=12>>12 years old
How old is James' older brother? ** So James's older brother is 12+4=<<12+4=16>>16 years old
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