Elvina Pan's answer to 's Primary 4 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Elvina Pan
Elvina Pan's answer
13 answers (Tutor Details)
1st
You can find the mass of 2 cups from the difference between the mass before and after the 2 cups are removed.