Taking out $20k loan for startup costs and I want to offer ownership shares to one investor who’s lending me half ($10k) but need advice on how to structure it please.

I know nothing of what to include, whats a typical percentage and for how long. In case it factors, their loan will be very low rate or interest free, tbd.

Are ownership shares even common for such a low amount loan? Is there an average?

Any advice is helpful. Thx.