Costs of bathrooms and kitchens in new home construction

[Cailan Knight]

Hello! I've been trying to find an answer to my question for a couple weeks now and no home builders in my area have really been helpful at all! It's for a course I'm taking.

I am trying to determine what portion of new home construction(or condo construction) costs are for kitchen and baths. I've determined that the cost per Sq.Ft in my area for new home construction is anywhere between $80-$340 depending on quality. No one can tell me the percentage of that cost that would be for kitchens and bathrooms! 

So, can anyone with experience in this give me a ROUGH estimate. I don't need exact figures by any means, just a rough idea. I'm aware that prices are different all over as well.

If it costs you $100,000 to construct your average house...How much of that will be for kitchens and bathrooms?

Thanks so much to whoever can help me with this!