Alvin wants to become a hairdresser he can save 250 a month for two years and his family has promised him to help with the rest his training will cost him 9500 how much will his family have to pay

Alvin can save a total of 250 * 12 = $<<250*12=3000>>3000 per year.

So in two years, he will be able to save a total of 3000 * 2 = $6000.
Therefore, his family will have to pay 9500 - 6000 = $<<9500-6000=3500>>3500. Answer: \boxed{3500}.