Here are some ingredients for Bolognese sauce:

400g mince beef

800g chopped tomatoes

600ml stock

300ml red wine

kubby only has 300g minced beef

how much of all the other ingredients should she use?

If kubby has only 300g of minced beef, he should use 600g chopped tomatoes, 450ml stock, and 225ml red wine.

Reason:

300g of 400g is a 25% decrease, so all other ingredients must be multiplied by. 75 to even the distribution.