Ruben wants to pour 71.82 g of salt into a container so far. He has poured forty nine point four grams how much more salt should ruben pour

Ruben wants to pour a total of 71.82 g of salt into the container. He has already poured 49.4 g, so he still needs to pour in:

71.82 g - 49.4 g = 22.42 g

Ruben should pour an additional 22.42 g of salt.