Mother asked Jiaozi to improve the life of a family of three. Dad ate a quarter of jiaozi first, then Feifei ate the remaining third, and finally Mom. ...
Feifei ate a whole quarter, while mother ate a whole half. Dad ate a whole quarter and took the whole amount as 1. After Dad finished eating, Feifei ate the remaining third and the remaining half of jiaozi, so Mom ate the whole half.