Rice salad for party - how much?

[AChickenCalledKorma]

I'm going to a house warming party tomorrow. Each family bringing a dish. There will be couscous salad, rice salad, sausage rolls etc, crisps and puddings.

I'm doing rice salad. I have no idea how much rice to cook! There will be about 15 adults and 25 children. Anyone been there and done that?

This is nice

Is make for about 20 people which should be a big enough.

Thanks RedBlanket That will do nicely!