Mix 4/5 of 300 starlight herbs with 2/3 of 180 moonlight flowers. How many items or units did you mix together?

Subtract 1/4 of 320 crystal shards from 3/5 of 320 shards, then divide by 2.

Elara needs 1/4 of a jar of pixie dust for her invisibility potion. If the jar contains 120 grams, how many grams does she need?

Finn mixes 2/5 of a bottle of dragon scale oil with 3/7 of another identical bottle. How much of a full bottle does he have in total?

Gwen has 90 moonflower petals. She uses 2/3 for a sleeping draught and 1/6 for a dreamwalking elixir. How many petals did she use in total?

Professor Willow needs 3/4 of a cup of phoenix tears for a healing potion. He only has 1/2 a cup. How much more does he need?

Cedric has 240 grams of starlight herbs. He divides them equally into 3 portions. He then uses 1/2 of one portion for a strength potion. How many grams did he use for the strength potion?

Isolde has 1/3 of a vial of unicorn hair. She uses 1/2 of that amount for a truth serum. What fraction of the whole vial did she use?

A recipe for a love potion calls for 2/3 of a cup of rose petals and 1/4 of a cup of lavender. What is the total amount of flowers needed?

Horace has 180 ml of griffin feather ink. He uses 2/5 of it one day and 1/3 the next. How much ink has he used in total?

A potion requires 3/4 of a litre of mandrake root extract. If Elara has 15 litres, how many portions of the potion can she make?

Finn has 1/2 a bag of glow worms. He gives 1/3 of his glow worms to Cedric. What fraction of the original bag did Cedric receive?