Answer:
Alan needs to pour 29.79 g.
Explanation:
Given the amount of salt Alan wants to pour (70.99 g) and the amount he's already poured (41.2 g), we can determine how much more he should pour by subtracting 41.2 from 70.99
Amount Alan needs to pour = 70.99 - 41.2
Amount Alan needs to pour = 29.79
Thus, given that Alan has already poured 41.2 g of salt into the container, Alan needs to pour 29.79 more g of salt for the container to have 70.99 g of salt.