Tristan has 1/3 lb of grapes at home he went to the store and bought 3/8 lb of grapes what fraction of a pound of grapes does Tristan have now explained

Keisha makes a large sandwich for a family picnic she takes 1/2 of them the sandwich to the picnic her family eats 3/8 of the whole sandwich what fraction of the whole sandwich does keisha bring back from the picnic

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

What is the correct decimal form of 12%