Math word problem

Question

Suzy has 120 shells. She gave her brother 1/3 of the shells. And gave her sister half of what remained after giving their brother 1/3. How many shells would each sister have left. And how many shells would her brother have.

Answer 1

I suppose Suzy gave all the remaining shells to her sister.

So, Suzy's brother will have (1/3)(120) = 40 shells and her sister will have (120 - 40) = 80 shells