Farmer Jones has 380 acres.Wheat is planted on 160 acres.10 acres are set apart for the house,barns,silos,etc.The remaining acres are equally divided for raising 5 different crops,one of those being alfalfa.On how many acres does farmer Jones raise Alfalfa?

The total number of acres for the house, barns, silos, etc. is 10 acres.

The number of acres used for wheat is 160 acres.
So the total number of acres for the house, barns, silos, etc. and the wheat is 10 + 160 = <<10+160=170>>170 acres.
The remaining acres are 380 - 170 = <<380-170=210>>210 acres.
Since the remaining acres are equally divided for raising 5 different crops, each crop is grown on 210 / 5 = <<210/5=42>>42 acres.
Therefore, farmer Jones raises alfalfa on 42 acres. Answer: \boxed{42}.