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how to determine where a 3rd substituent added to substituted benzene?

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AussieKenDoll:
There is a Toluene which has a -NHCOCH3 on the para position and if we react it with Br2 , FeCl3 to give a Br substituent ,where does this Br added to?
Does it added to the ortho position next to Methyl group? Or generally how it determined?

AWK:
No catalyst is needed. Practically one isomer is formed.
http://www.orgsyn.org/demo.aspx?prep=CV1P0111

hollytara:
The substituents are in competition - the more activating one wins.

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