WHat do you mean when you say you don't know "which graph is which"
Amount of walnuts=
Amount of almonds=
Amount of pecans=
Total amount=
LCM is 4 so sum is =
=
As given, Carmela divides the mixed nuts into 3/10 kilogram bags so number of bags will be:

=
= 5
Hence, answer is 5 bags.
The answer is g = 21
just multiply the fraction.
3 × 7 is 21.